diff --git a/lib/Array.cry b/lib/Array.cry
deleted file mode 100644
index e178d7ff..00000000
--- a/lib/Array.cry
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * Copyright (c) 2020 Galois, Inc.
- * Distributed under the terms of the BSD3 license (see LICENSE file)
- */
-
-module Array where
-
-primitive type Array : * -> * -> *
-
-primitive arrayConstant : {a, b} b -> (Array a b)
-primitive arrayLookup : {a, b} (Array a b) -> a -> b
-primitive arrayUpdate : {a, b} (Array a b) -> a -> b -> (Array a b)
-
diff --git a/src/Cryptol/Eval.hs b/src/Cryptol/Eval.hs
index 484b1dbc..eb86a8f0 100644
--- a/src/Cryptol/Eval.hs
+++ b/src/Cryptol/Eval.hs
@@ -428,7 +428,6 @@ etaDelay sym msg env0 Forall{ sVars = vs0, sType = tp0 } = goTpVars env0 vs0
       TVInteger -> v
       TVIntMod _ -> v
       TVRational -> v
-      TVArray{} -> v
 
       TVSeq n TVBit ->
           do w <- sDelayFill sym (fromWordVal "during eta-expansion" =<< v) (etaWord sym n v)
diff --git a/src/Cryptol/Eval/Generic.hs b/src/Cryptol/Eval/Generic.hs
index 00921336..de4d4c07 100644
--- a/src/Cryptol/Eval/Generic.hs
+++ b/src/Cryptol/Eval/Generic.hs
@@ -160,9 +160,6 @@ ringBinary sym opw opi opz opq = loop
     TVRational ->
       VRational <$> opq (fromVRational l) (fromVRational r)
 
-    TVArray{} ->
-      evalPanic "arithBinary" ["Array not in class Ring"]
-
     TVSeq w a
       -- words and finite sequences
       | isTBit a -> do
@@ -239,9 +236,6 @@ ringUnary sym opw opi opz opq = loop
     TVRational ->
       VRational <$> opq (fromVRational v)
 
-    TVArray{} ->
-      evalPanic "arithUnary" ["Array not in class Ring"]
-
     TVSeq w a
       -- words and finite sequences
       | isTBit a -> do
@@ -303,8 +297,6 @@ ringNullary sym opw opi opz opq = loop
 
         TVRational -> VRational <$> opq
 
-        TVArray{} -> evalPanic "arithNullary" ["Array not in class Ring"]
-
         TVSeq w a
           -- words and finite sequences
           | isTBit a -> pure $ VWord w $ (WordVal <$> opw w)
@@ -631,8 +623,6 @@ cmpValue sym fb fw fi fz fq = cmp
         TVInteger     -> fi (fromVInteger v1) (fromVInteger v2) k
         TVIntMod n    -> fz n (fromVInteger v1) (fromVInteger v2) k
         TVRational    -> fq (fromVRational v1) (fromVRational v2) k
-        TVArray{}     -> panic "Cryptol.Prims.Value.cmpValue"
-                               [ "Arrays are not comparable" ]
         TVSeq n t
           | isTBit t  -> do w1 <- fromVWord sym "cmpValue" v1
                             w2 <- fromVWord sym "cmpValue" v2
@@ -786,8 +776,6 @@ zeroV sym ty = case ty of
   TVRational ->
     VRational <$> (intToRational sym =<< integerLit sym 0)
 
-  TVArray{} -> evalPanic "zeroV" ["Array not in class Zero"]
-
   -- sequences
   TVSeq w ety
       | isTBit ety -> pure $ word sym w 0
@@ -1191,7 +1179,6 @@ logicBinary sym opb opw = loop
     TVInteger -> evalPanic "logicBinary" ["Integer not in class Logic"]
     TVIntMod _ -> evalPanic "logicBinary" ["Z not in class Logic"]
     TVRational -> evalPanic "logicBinary" ["Rational not in class Logic"]
-    TVArray{} -> evalPanic "logicBinary" ["Array not in class Logic"]
 
     TVSeq w aty
          -- words
@@ -1269,7 +1256,6 @@ logicUnary sym opb opw = loop
     TVInteger -> evalPanic "logicUnary" ["Integer not in class Logic"]
     TVIntMod _ -> evalPanic "logicUnary" ["Z not in class Logic"]
     TVRational -> evalPanic "logicBinary" ["Rational not in class Logic"]
-    TVArray{} -> evalPanic "logicUnary" ["Array not in class Logic"]
 
     TVSeq w ety
          -- words
@@ -1712,7 +1698,6 @@ errorV sym ty msg = case ty of
   TVInteger -> cryUserError sym msg
   TVIntMod _ -> cryUserError sym msg
   TVRational -> cryUserError sym msg
-  TVArray{} -> cryUserError sym msg
 
   -- sequences
   TVSeq w ety
diff --git a/src/Cryptol/Eval/Reference.lhs b/src/Cryptol/Eval/Reference.lhs
index 8e17d10d..c455e6ba 100644
--- a/src/Cryptol/Eval/Reference.lhs
+++ b/src/Cryptol/Eval/Reference.lhs
@@ -68,7 +68,6 @@ are as follows:
 | `Integer`         | integers          | `TVInteger`                 |
 | `Z n`             | integers modulo n | `TVIntMod n`                |
 | `Rational`        | rationals         | `TVRational`                |
-| `Array`           | arrays            | `TVArray`                   |
 | `[n]a`            | finite lists      | `TVSeq n a`                 |
 | `[inf]a`          | infinite lists    | `TVStream a`                |
 | `(a, b, c)`       | tuples            | `TVTuple [a,b,c]`           |
@@ -177,7 +176,6 @@ cpo that represents any given schema.
 >         TVInteger    -> VInteger (fromVInteger val)
 >         TVIntMod _   -> VInteger (fromVInteger val)
 >         TVRational   -> VRational (fromVRational val)
->         TVArray{}    -> evalPanic "copyByTValue" ["Unsupported Array type"]
 >         TVSeq w ety  -> VList (Nat w) (map (go ety) (copyList w (fromVList val)))
 >         TVStream ety -> VList Inf (map (go ety) (copyStream (fromVList val)))
 >         TVTuple etys -> VTuple (zipWith go etys (copyList (genericLength etys) (fromVTuple val)))
@@ -823,7 +821,6 @@ where the given error is "pushed down" into the leaf types.
 > cryError e TVInteger      = VInteger (Left e)
 > cryError e TVIntMod{}     = VInteger (Left e)
 > cryError e TVRational     = VRational (Left e)
-> cryError _ TVArray{}      = evalPanic "error" ["Array type not supported in `error`"]
 > cryError e (TVSeq n ety)  = VList (Nat n) (genericReplicate n (cryError e ety))
 > cryError e (TVStream ety) = VList Inf (repeat (cryError e ety))
 > cryError e (TVTuple tys)  = VTuple (map (cryError e) tys)
@@ -848,7 +845,6 @@ For functions, `zero` returns the constant function that returns
 > zero TVInteger      = VInteger (Right 0)
 > zero TVIntMod{}     = VInteger (Right 0)
 > zero TVRational     = VRational (Right 0)
-> zero TVArray{}      = evalPanic "zero" ["Array type not in `Zero`"]
 > zero (TVSeq n ety)  = VList (Nat n) (genericReplicate n (zero ety))
 > zero (TVStream ety) = VList Inf (repeat (zero ety))
 > zero (TVTuple tys)  = VTuple (map zero tys)
@@ -899,7 +895,6 @@ at the same positions.
 >         TVFun _ bty  -> VFun (\v -> go bty (fromVFun val v))
 >         TVInteger    -> evalPanic "logicUnary" ["Integer not in class Logic"]
 >         TVIntMod _   -> evalPanic "logicUnary" ["Z not in class Logic"]
->         TVArray{}    -> evalPanic "logicUnary" ["Array not in class Logic"]
 >         TVRational   -> evalPanic "logicUnary" ["Rational not in class Logic"]
 >         TVAbstract{} -> evalPanic "logicUnary" ["Abstract type not in `Logic`"]
 
@@ -918,7 +913,6 @@ at the same positions.
 >         TVFun _ bty  -> VFun (\v -> go bty (fromVFun l v) (fromVFun r v))
 >         TVInteger    -> evalPanic "logicBinary" ["Integer not in class Logic"]
 >         TVIntMod _   -> evalPanic "logicBinary" ["Z not in class Logic"]
->         TVArray{}    -> evalPanic "logicBinary" ["Array not in class Logic"]
 >         TVRational   -> evalPanic "logicBinary" ["Rational not in class Logic"]
 >         TVAbstract{} -> evalPanic "logicBinary" ["Abstract type not in `Logic`"]
 
@@ -950,8 +944,6 @@ False]`, but to `[error "foo", error "foo"]`.
 >           VInteger (flip mod n <$> i)
 >         TVRational ->
 >           VRational q
->         TVArray{} ->
->           evalPanic "arithNullary" ["Array not in class Ring"]
 >         TVSeq w a
 >           | isTBit a  -> vWord w i
 >           | otherwise -> VList (Nat w) (genericReplicate w (go a))
@@ -979,8 +971,6 @@ False]`, but to `[error "foo", error "foo"]`.
 >           evalPanic "arithUnary" ["Bit not in class Ring"]
 >         TVInteger ->
 >           VInteger $ appOp1 iop (fromVInteger val)
->         TVArray{} ->
->           evalPanic "arithUnary" ["Array not in class Ring"]
 >         TVIntMod n ->
 >           VInteger $ appOp1 (\i -> flip mod n <$> iop i) (fromVInteger val)
 >         TVRational ->
@@ -1016,8 +1006,6 @@ False]`, but to `[error "foo", error "foo"]`.
 >           VInteger $ appOp2 (\i j -> flip mod n <$> iop i j) (fromVInteger l) (fromVInteger r)
 >         TVRational ->
 >           VRational $ appOp2 qop (fromVRational l) (fromVRational r)
->         TVArray{} ->
->           evalPanic "arithBinary" ["Array not in class Ring"]
 >         TVSeq w a
 >           | isTBit a  -> vWord w $ appOp2 iop (fromVWord l) (fromVWord r)
 >           | otherwise -> VList (Nat w) (zipWith (go a) (fromVList l) (fromVList r))
@@ -1161,8 +1149,6 @@ bits to the *left* of that position are equal.
 >       compare <$> fromVInteger l <*> fromVInteger r
 >     TVRational ->
 >       compare <$> fromVRational l <*> fromVRational r
->     TVArray{} ->
->       evalPanic "lexCompare" ["invalid type"]
 >     TVSeq _w ety ->
 >       lexList (zipWith (lexCompare ety) (fromVList l) (fromVList r))
 >     TVStream _ ->
@@ -1208,8 +1194,6 @@ fields are compared in alphabetical order.
 >       evalPanic "lexSignedCompare" ["invalid type"]
 >     TVRational ->
 >       evalPanic "lexSignedCompare" ["invalid type"]
->     TVArray{} ->
->       evalPanic "lexSignedCompare" ["invalid type"]
 >     TVSeq _w ety
 >       | isTBit ety -> compare <$> fromSignedVWord l <*> fromSignedVWord r
 >       | otherwise ->
diff --git a/src/Cryptol/Eval/Type.hs b/src/Cryptol/Eval/Type.hs
index 401eee39..2b1a8829 100644
--- a/src/Cryptol/Eval/Type.hs
+++ b/src/Cryptol/Eval/Type.hs
@@ -31,7 +31,6 @@ data TValue
   | TVInteger                 -- ^ @ Integer @
   | TVIntMod Integer          -- ^ @ Z n @
   | TVRational                -- ^ @Rational@
-  | TVArray TValue TValue     -- ^ @ Array a b @
   | TVSeq Integer TValue      -- ^ @ [n]a @
   | TVStream TValue           -- ^ @ [inf]t @
   | TVTuple [TValue]          -- ^ @ (a, b, c )@
@@ -48,7 +47,6 @@ tValTy tv =
     TVInteger   -> tInteger
     TVIntMod n  -> tIntMod (tNum n)
     TVRational  -> tRational
-    TVArray a b -> tArray (tValTy a) (tValTy b)
     TVSeq n t   -> tSeq (tNum n) (tValTy t)
     TVStream t  -> tSeq tInf (tValTy t)
     TVTuple ts  -> tTuple (map tValTy ts)
@@ -110,7 +108,6 @@ evalType env ty =
         (TCIntMod, [n]) -> case num n of
                              Inf   -> evalPanic "evalType" ["invalid type Z inf"]
                              Nat m -> Right $ TVIntMod m
-        (TCArray, [a, b]) -> Right $ TVArray (val a) (val b)
         (TCSeq, [n, t]) -> Right $ tvSeq (num n) (val t)
         (TCFun, [a, b]) -> Right $ TVFun (val a) (val b)
         (TCTuple _, _)  -> Right $ TVTuple (map val ts)
diff --git a/src/Cryptol/ModuleSystem/Base.hs b/src/Cryptol/ModuleSystem/Base.hs
index 5fc49454..857c8d45 100644
--- a/src/Cryptol/ModuleSystem/Base.hs
+++ b/src/Cryptol/ModuleSystem/Base.hs
@@ -42,14 +42,14 @@ import qualified Cryptol.TypeCheck.AST as T
 import qualified Cryptol.TypeCheck.PP as T
 import qualified Cryptol.TypeCheck.Sanity as TcSanity
 import Cryptol.Transform.AddModParams (addModParams)
-import Cryptol.Utils.Ident (preludeName, arrayName, interactiveName
+import Cryptol.Utils.Ident (preludeName, interactiveName
                            , modNameChunks, notParamInstModName
                            , isParamInstModName )
 import Cryptol.Utils.PP (pretty)
 import Cryptol.Utils.Panic (panic)
 import Cryptol.Utils.Logger(logPutStrLn, logPrint)
 
-import Cryptol.Prelude (preludeContents, arrayContents)
+import Cryptol.Prelude (preludeContents)
 
 import Cryptol.Transform.MonoValues (rewModule)
 
@@ -259,7 +259,6 @@ findModule n = do
   handleNotFound =
     case n of
       m | m == preludeName -> pure (InMem "Cryptol" preludeContents)
-        | m == arrayName -> pure (InMem "Array" arrayContents)
       _ -> moduleNotFound n =<< getSearchPath
 
   -- generate all possible search paths
diff --git a/src/Cryptol/ModuleSystem/Name.hs b/src/Cryptol/ModuleSystem/Name.hs
index 4f98e22f..06f055bd 100644
--- a/src/Cryptol/ModuleSystem/Name.hs
+++ b/src/Cryptol/ModuleSystem/Name.hs
@@ -13,7 +13,6 @@
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards #-}
 -- for the instances of RunM and BaseM
 {-# LANGUAGE UndecidableInstances #-}
@@ -222,10 +221,7 @@ nameFixity = nFixity
 asPrim :: Name -> Maybe Ident
 asPrim Name { .. } =
   case nInfo of
-    Declared p _
-      | p == preludeName -> Just nIdent
-      | p == arrayName ->
-        Just $ mkIdent $ modNameToText p <> "::" <> identText nIdent
+    Declared p _ | p == preludeName -> Just nIdent
     _ -> Nothing
 
 toParamInstName :: Name -> Name
diff --git a/src/Cryptol/Prelude.hs b/src/Cryptol/Prelude.hs
index 05000155..f227fb57 100644
--- a/src/Cryptol/Prelude.hs
+++ b/src/Cryptol/Prelude.hs
@@ -13,11 +13,7 @@
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE OverloadedStrings #-}
 
-module Cryptol.Prelude
-  ( preludeContents
-  , arrayContents
-  , cryptolTcContents
-  ) where
+module Cryptol.Prelude (preludeContents,cryptolTcContents) where
 
 import Data.ByteString(ByteString)
 import qualified Data.ByteString.Char8 as B
@@ -27,8 +23,5 @@ import Text.Heredoc (there)
 preludeContents :: ByteString
 preludeContents = B.pack [there|lib/Cryptol.cry|]
 
-arrayContents :: ByteString
-arrayContents = B.pack [there|lib/Array.cry|]
-
 cryptolTcContents :: String
 cryptolTcContents = [there|lib/CryptolTC.z3|]
diff --git a/src/Cryptol/Testing/Random.hs b/src/Cryptol/Testing/Random.hs
index a7423a23..a068d74c 100644
--- a/src/Cryptol/Testing/Random.hs
+++ b/src/Cryptol/Testing/Random.hs
@@ -363,7 +363,6 @@ typeSize ty =
                               TCon (TC (TCNum n)) _ -> Just n
                               _                     -> Nothing
         (TCIntMod, _)    -> Nothing
-        (TCArray, _)     -> Nothing
         (TCSeq, [sz,el]) -> case tNoUser sz of
                               TCon (TC (TCNum n)) _ -> (^ n) <$> typeSize el
                               _                     -> Nothing
@@ -398,7 +397,6 @@ typeValues ty =
             [ TCon (TC (TCNum n)) _ ] | 0 < n ->
               [ VInteger x | x <- [ 0 .. n - 1 ] ]
             _ -> []
-        TCArray     -> []
         TCSeq       ->
           case map tNoUser ts of
             [ TCon (TC (TCNum n)) _, TCon (TC TCBit) [] ] ->
diff --git a/src/Cryptol/TypeCheck/TCon.hs b/src/Cryptol/TypeCheck/TCon.hs
index 49d075c4..b8bb0ba2 100644
--- a/src/Cryptol/TypeCheck/TCon.hs
+++ b/src/Cryptol/TypeCheck/TCon.hs
@@ -42,7 +42,6 @@ builtInType nm =
   case M.nameInfo nm of
     M.Declared m _
       | m == preludeName -> Map.lookup (M.nameIdent nm) builtInTypes
-      | m == arrayName   -> Map.lookup (M.nameIdent nm) builtInArray
     _ -> Nothing
 
   where
@@ -86,11 +85,6 @@ builtInType nm =
     , "lengthFromThenTo" ~> TF TCLenFromThenTo
     ]
 
-  -- Built-in types from Array.cry
-  builtInArray = Map.fromList
-    [ "Array" ~> TC TCArray
-    ]
-
 
 
 
@@ -126,7 +120,6 @@ instance HasKind TC where
       TCInteger -> KType
       TCRational -> KType
       TCIntMod  -> KNum :-> KType
-      TCArray   -> KType :-> KType :-> KType
       TCSeq     -> KNum :-> KType :-> KType
       TCFun     -> KType :-> KType :-> KType
       TCTuple n -> foldr (:->) KType (replicate n KType)
@@ -209,7 +202,6 @@ data TC     = TCNum Integer            -- ^ Numbers
             | TCInteger                -- ^ Integer
             | TCIntMod                 -- ^ @Z _@
             | TCRational               -- ^ @Rational@
-            | TCArray                  -- ^ @Array _ _@
             | TCSeq                    -- ^ @[_] _@
             | TCFun                    -- ^ @_ -> _@
             | TCTuple Int              -- ^ @(_, _, _)@
@@ -310,7 +302,6 @@ instance PP TC where
       TCInteger -> text "Integer"
       TCIntMod  -> text "Z"
       TCRational -> text "Rational"
-      TCArray   -> text "Array"
       TCSeq     -> text "[]"
       TCFun     -> text "(->)"
       TCTuple 0 -> text "()"
diff --git a/src/Cryptol/TypeCheck/Type.hs b/src/Cryptol/TypeCheck/Type.hs
index 4f5b7092..3b90eea1 100644
--- a/src/Cryptol/TypeCheck/Type.hs
+++ b/src/Cryptol/TypeCheck/Type.hs
@@ -507,9 +507,6 @@ tRational  = TCon (TC TCRational) []
 tIntMod :: Type -> Type
 tIntMod n = TCon (TC TCIntMod) [n]
 
-tArray :: Type -> Type -> Type
-tArray a b = TCon (TC TCArray) [a, b]
-
 tWord    :: Type -> Type
 tWord a   = tSeq a tBit
 
diff --git a/src/Cryptol/Utils/Ident.hs b/src/Cryptol/Utils/Ident.hs
index b147d268..c4abf3d6 100644
--- a/src/Cryptol/Utils/Ident.hs
+++ b/src/Cryptol/Utils/Ident.hs
@@ -16,7 +16,6 @@ module Cryptol.Utils.Ident
   , modNameChunks
   , packModName
   , preludeName
-  , arrayName
   , interactiveName
   , noModuleName
   , exprModName
@@ -101,9 +100,6 @@ modInstPref = "`"
 preludeName :: ModName
 preludeName  = packModName ["Cryptol"]
 
-arrayName :: ModName
-arrayName  = packModName ["Array"]
-
 interactiveName :: ModName
 interactiveName  = packModName ["<interactive>"]
 
diff --git a/tests/regression/array.icry b/tests/regression/array.icry
deleted file mode 100644
index f9e08723..00000000
--- a/tests/regression/array.icry
+++ /dev/null
@@ -1,3 +0,0 @@
-:module Array
-:browse Array
-
diff --git a/tests/regression/array.icry.stdout b/tests/regression/array.icry.stdout
deleted file mode 100644
index 0fd0054f..00000000
--- a/tests/regression/array.icry.stdout
+++ /dev/null
@@ -1,20 +0,0 @@
-Loading module Cryptol
-Loading module Array
-Primitive Types
-===============
-
-  Public
-  ------
-
-    Array : * -> * -> *
-
-Symbols
-=======
-
-  Public
-  ------
-
-    arrayConstant : {a, b} b -> Array a b
-    arrayLookup : {a, b} Array a b -> a -> b
-    arrayUpdate : {a, b} Array a b -> a -> b -> Array a b
-