diff --git a/go/217-Contains-Duplicate.go b/go/217-Contains-Duplicate.go
new file mode 100644
index 000000000..280d3b8d8
--- /dev/null
+++ b/go/217-Contains-Duplicate.go
@@ -0,0 +1,12 @@
+func containsDuplicate(nums []int) bool {
+	nums_map := map[int]int{}
+	for _, n := range nums {
+		if _, ok := nums_map[n]; !ok {
+			nums_map[n] = 1
+		} else {
+			return true
+		}
+	}
+	return false
+
+}
\ No newline at end of file