恩嘎丁（德语：Engadin，法语：Engadine，意大利语：Engadina，罗曼什语：Engiadina）一译恩加丁，是瑞士东南部格劳宾登州境内的一条因河河谷。“恩嘎丁”在罗曼什语里意为“因河花园”。恩嘎丁以充满阳光的天气、秀丽的风景、户外运动而闻名于世。恩嘎丁一般分为两部分：上恩嘎丁从马洛亚隘口到采尔内茨，这段山谷较为宽阔平坦；下恩嘎丁从采尔内茨一直到奥地利边境，这段山谷地势迅速下降，比较曲折。

The Engadin or Engadine (Romansh: Engiadina , German:Engadin, Italian:Engadina, French:Engadine; tr: Valley of the Inn people) is a long valley in the eastern Swiss Alps located in the canton of Graubünden in southeast Switzerland. It follows the route of the Inn from its headwaters at Maloja Pass running roughly northeast until the Inn flows into Austria, one hundred kilometers downstream. The Engadine is protected by high mountains on all sides and is famous for its sunny climate, beautiful landscapes, and outdoor activities.