diff --git a/Ciphers/RailFenceCipher.js b/Ciphers/RailFenceCipher.js
new file mode 100644
index 0000000000..6db01b46b3
--- /dev/null
+++ b/Ciphers/RailFenceCipher.js
@@ -0,0 +1,20 @@
+function railFenceCipher(text, rails) {
+  if (rails <= 1) return text
+
+  const fence = Array.from({ length: rails }, () => [])
+  let rail = 0
+  let direction = 1
+
+  for (const char of text) {
+    fence[rail].push(char)
+    rail += direction
+
+    if (rail === 0 || rail === rails - 1) {
+      direction *= -1
+    }
+  }
+
+  return fence.flat().join('')
+}
+
+module.exports = railFenceCipher