diff --git a/csharp/0026-remove-duplicates-from-sorted-array.cs b/csharp/0026-remove-duplicates-from-sorted-array.cs
new file mode 100644
index 000000000..03159918b
--- /dev/null
+++ b/csharp/0026-remove-duplicates-from-sorted-array.cs
@@ -0,0 +1,13 @@
+public class Solution {
+    public int RemoveDuplicates(int[] nums) {
+        var left = 1;
+        for(var right = 1; right < nums.Length; right++) {
+            if(nums[right] != nums[right-1]) {
+                nums[left] = nums[right];
+                left++;
+            }
+        }
+
+        return left;
+    }
+}
\ No newline at end of file