Tachileik District (Burmese: တာချီလိတ်ခရိုင်; Thai: ท่าขี้เหล็ก, RTGS: Tha Khilek, pronounced [tʰâː.kʰîː.lèk], Thai meaning: "Cassod Port") is a district of the Shan State in Myanmar.

It is one of the four districts of Eastern Shan State.

The main town of Tachileik borders with the northernmost town of Mai Sae in the Chiang Rai province of Thailand.

Tachileik and Mai Sae have immigration processing and border crossing checkpoints at both ends of the bridge that connects the two border towns.

This Myanmar location article is a stub.