diff --git a/snippets/key_in_dict.md b/snippets/key_in_dict.md
new file mode 100644
index 000000000..24c33423f
--- /dev/null
+++ b/snippets/key_in_dict.md
@@ -0,0 +1,18 @@
+---
+title: key_in_dict
+tags: dictionary,beginner
+---
+
+Checks if the given key exists in a dictionary.
+
+- Use the `in` operator to check if `d` contains `key`.
+
+```py
+def key_in_dict(d, key):
+  return (key in d)
+```
+
+```py
+d = {'one': 1, 'three': 3, 'five': 5, 'two': 2, 'four': 4}
+key_in_dict(d, 'three') # True
+```