diff --git a/.changeset/wise-ducks-beam.md b/.changeset/wise-ducks-beam.md
new file mode 100644
index 00000000..cbce8a32
--- /dev/null
+++ b/.changeset/wise-ducks-beam.md
@@ -0,0 +1,5 @@
+---
+'@primer/css': patch
+---
+
+Use tabular numbers in tables
diff --git a/src/markdown/tables.scss b/src/markdown/tables.scss
index 72e66355..c421a88d 100644
--- a/src/markdown/tables.scss
+++ b/src/markdown/tables.scss
@@ -8,6 +8,7 @@
     width: max-content;
     max-width: 100%;
     overflow: auto;
+    font-variant: tabular-nums;
 
     th {
       // stylelint-disable-next-line primer/typography