diff --git a/docs/.vitepress/en.mts b/docs/.vitepress/en.mts
index d022b384..41f5edf2 100644
--- a/docs/.vitepress/en.mts
+++ b/docs/.vitepress/en.mts
@@ -70,6 +70,8 @@ function sidebar(): DefaultTheme.Sidebar {
             { text: 'unionBy', link: '/reference/array/unionBy' },
             { text: 'unionWith', link: '/reference/array/unionWith' },
             { text: 'uniq', link: '/reference/array/uniq' },
+            { text: 'uniqBy', link: '/reference/array/uniqBy' },
+            { text: 'uniqWith', link: '/reference/array/uniqWith' },
             { text: 'xor', link: '/reference/array/xor' },
             { text: 'xorBy', link: '/reference/array/xorBy' },
             { text: 'xorWith', link: '/reference/array/xorWith' },
diff --git a/docs/.vitepress/ko.mts b/docs/.vitepress/ko.mts
index 8d77a295..ef907c58 100644
--- a/docs/.vitepress/ko.mts
+++ b/docs/.vitepress/ko.mts
@@ -69,6 +69,8 @@ function sidebar(): DefaultTheme.Sidebar {
             { text: 'unionBy', link: '/ko/reference/array/unionBy' },
             { text: 'unionWith', link: '/ko/reference/array/unionWith' },
             { text: 'uniq', link: '/ko/reference/array/uniq' },
+            { text: 'uniqBy', link: '/ko/reference/array/uniqBy' },
+            { text: 'uniqWith', link: '/ko/reference/array/uniqWith' },
             { text: 'xor', link: '/ko/reference/array/xor' },
             { text: 'xorBy', link: '/ko/reference/array/xorBy' },
             { text: 'xorWith', link: '/ko/reference/array/xorWith' },
diff --git a/docs/ko/reference/array/uniqBy.md b/docs/ko/reference/array/uniqBy.md
new file mode 100644
index 00000000..c6f72411
--- /dev/null
+++ b/docs/ko/reference/array/uniqBy.md
@@ -0,0 +1,25 @@
+# uniqBy
+
+`mapper` 함수가 반환하는 값을 기준으로, 배열 내 요소들의 중복을 제거해요.
+
+## 인터페이스
+
+```typescript
+function uniqBy<T, U>(arr: T[], mapper: (item: T) => U): T[]
+```
+
+### 파라미터
+
+- `arr` (`T[]`): 중복을 제거할 배열.
+- `mapper` (`(item: T) => U`): 비교하기 위해 요소를 새로운 값으로 변환할 함수.
+
+### 반환 값
+
+(`T[]`): `mapper` 함수가 반환하는 값을 기준으로 중복이 제거된 배열.
+
+## 예시
+
+```typescript
+uniqBy([1.2, 1.5, 2.1, 3.2, 5.7, 5.3, 7.19], Math.floor);
+// [1.2, 2.1, 3.3, 5.7, 7.19]
+```
diff --git a/docs/ko/reference/array/uniqWith.md b/docs/ko/reference/array/uniqWith.md
new file mode 100644
index 00000000..2b745dba
--- /dev/null
+++ b/docs/ko/reference/array/uniqWith.md
@@ -0,0 +1,25 @@
+# uniqWith
+
+두 요소가 일치하는지 여부를 판단하는 커스텀 함수를 기준으로, 배열 내 요소들의 중복을 제거해요.
+
+## 인터페이스
+
+```typescript
+function uniqWith<T>(arr: T[], areItemsEqual: (item1: T, item2: T) => boolean): T[]
+```
+
+### 파라미터
+
+- `arr` (`T[]`): 중복을 제거할 배열.
+- `areItemsEqual` (`(x: T, y: T) => boolean`): 두 요소가 일치하는지 판단하는 일치 함수예요. 두 요소가 일치한다면 `true`를, 일치하지 않는다면 `false`를 반환하게 해주세요.
+
+### 반환 값
+
+(`T[]`): 커스텀 일치 함수의 반환 값을 기준으로, 중복이 제거된 새로운 배열.
+
+## 예시
+
+```typescript
+uniqWith([1.2, 1.5, 2.1, 3.2, 5.7, 5.3, 7.19], (a, b) => Math.abs(a - b) < 1);
+// [1.2, 3.2, 5.7, 7.19]
+```
diff --git a/docs/reference/array/uniq.md b/docs/reference/array/uniq.md
index 5cc2aac3..85d06e4b 100644
--- a/docs/reference/array/uniq.md
+++ b/docs/reference/array/uniq.md
@@ -1,5 +1,3 @@
-===
-
 # uniq
 
 Creates a duplicate-free version of an array.
diff --git a/docs/reference/array/uniqBy.md b/docs/reference/array/uniqBy.md
new file mode 100644
index 00000000..2292f4e5
--- /dev/null
+++ b/docs/reference/array/uniqBy.md
@@ -0,0 +1,25 @@
+# uniqBy
+
+Returns a new array containing only the unique elements from the original array, based on the values returned by the `mapper` function.
+
+## Signature
+
+```typescript
+function uniqBy<T, U>(arr: T[], mapper: (item: T) => U): T[]
+```
+
+### Parameters
+
+- `arr` (`T[]`): The array to process.
+- `mapper` (`(item: T) => U`): The function used to convert the array elements.
+
+### Returns
+
+(`T[]`): A new array containing only the unique elements from the original array, based on the values returned by the `mapper` function.
+
+## Examples
+
+```typescript
+uniqBy([1.2, 1.5, 2.1, 3.2, 5.7, 5.3, 7.19], Math.floor);
+// [1.2, 2.1, 3.3, 5.7, 7.19]
+```
diff --git a/docs/reference/array/uniqWith.md b/docs/reference/array/uniqWith.md
new file mode 100644
index 00000000..8b855e88
--- /dev/null
+++ b/docs/reference/array/uniqWith.md
@@ -0,0 +1,25 @@
+# uniqWith
+
+Returns a new array containing only the unique elements from the original array, based on the values returned by the comparator function.
+
+## Signature
+
+```typescript
+function uniqWith<T>(arr: T[], areItemsEqual: (item1: T, item2: T) => boolean): T[]
+```
+
+### Parameters
+
+- `arr` (`T[]`): The array to process.
+- `areItemsEqual` (`(x: T, y: T) => boolean`): A custom function to determine if two elements are equal. This function takes two arguments, one from each array, and returns true if the elements are considered equal, and false otherwise.
+
+### Returns
+
+(`T[]`): A new array containing only the unique elements from the original array, based on the values returned by the comparator function.
+
+## Examples
+
+```typescript
+uniqWith([1.2, 1.5, 2.1, 3.2, 5.7, 5.3, 7.19], (a, b) => Math.abs(a - b) < 1);
+// [1.2, 3.2, 5.7, 7.19]
+```
diff --git a/src/array/unionBy.spec.ts b/src/array/unionBy.spec.ts
index a9a6fe18..95a5c8d6 100644
--- a/src/array/unionBy.spec.ts
+++ b/src/array/unionBy.spec.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from 'vitest';
 import { unionBy } from './unionBy';
 
 describe('unionBy', () => {
-  it('should work with a `converter`', () => {
+  it('should work with a `mapper`', () => {
     expect(unionBy([2.1], [1.2, 2.3], Math.floor)).toEqual([2.1, 1.2]);
     expect(unionBy([{ x: 1 }], [{ x: 2 }, { x: 1 }], ({ x }) => x)).toEqual([{ x: 1 }, { x: 2 }]);
   });
diff --git a/src/array/uniqBy.spec.ts b/src/array/uniqBy.spec.ts
index 49bee324..a2821b9a 100644
--- a/src/array/uniqBy.spec.ts
+++ b/src/array/uniqBy.spec.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from 'vitest';
 import { uniqBy } from './uniqBy';
 
 describe('uniqBy', () => {
-  it('should work with a `converter`', () => {
+  it('should work with a `mapper`', () => {
     expect(uniqBy([2.1, 1.2, 2.3], Math.floor)).toEqual([2.1, 1.2]);
   });
 });
diff --git a/src/array/uniqBy.ts b/src/array/uniqBy.ts
index 96d80e0e..f2d2fb51 100644
--- a/src/array/uniqBy.ts
+++ b/src/array/uniqBy.ts
@@ -1,13 +1,12 @@
 import { uniqWith } from './uniqWith';
 
 /**
- * The `uniqBy` function takes an array as its first argument and a 'converter' function as the second. It maps the array elements using the converter function, then removes any duplicates.
- *
- * It filters out elements with the same value, meaning it does not check for duplicates in data types like Objects.
+ * Returns a new array containing only the unique elements from the original array,
+ * based on the values returned by the mapper function.
  *
  * @param {T[]} arr - The array to process.
- * @param {(item: T) => U} converter - The function used to convert the array elements.
- * @returns {T[]} A new array containing only the unique elements from the original array, based on the values returned by the converter function.
+ * @param {(item: T) => U} mapper - The function used to convert the array elements.
+ * @returns {T[]} A new array containing only the unique elements from the original array, based on the values returned by the mapper function.
  *
  * @example
  * ```ts
@@ -15,6 +14,6 @@ import { uniqWith } from './uniqWith';
  * // [1.2, 2.1, 3.3, 5.7, 7.19]
  * ```
  */
-export function uniqBy<T, U>(arr: readonly T[], converter: (item: T) => U): T[] {
-  return uniqWith(arr, (item1, item2) => converter(item1) === converter(item2));
+export function uniqBy<T, U>(arr: readonly T[], mapper: (item: T) => U): T[] {
+  return uniqWith(arr, (item1, item2) => mapper(item1) === mapper(item2));
 }
diff --git a/src/array/uniqWith.ts b/src/array/uniqWith.ts
index 0b7c8239..6c467a83 100644
--- a/src/array/uniqWith.ts
+++ b/src/array/uniqWith.ts
@@ -1,7 +1,6 @@
 /**
- * The `uniqWith` function takes an array as its first argument and a 'comparator' function as the second.
- *
- * It evaluates the elements of the array using the comparator function, and if true is returned, it considers those elements as duplicates and removes them.
+ * Returns a new array containing only the unique elements from the original array,
+ * based on the values returned by the comparator function.
  *
  * @param {T[]} arr - The array to process.
  * @param {(item1: T, item2: T) => boolean} areItemsEqual - The function used to compare the array elements.