| Tachileik | |
| Settlement Type: | District |
| Pushpin Map: | Burma |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Burma |
| Subdivision Type: | Country |
| Subdivision Name: | Burma |
| Subdivision Type1: | State |
| Subdivision Name1: | Shan State |
| Timezone: | MST |
| Utc Offset: | +6:30 |
| Coordinates: | 20.6833°N 100.0417°W |
| Elevation Footnotes: | [1] |
| Elevation M: | 400 |
Tachileik District (Burmese: တာချီလိတ်ခရိုင်; Thai: ท่าขี้เหล็ก,, in Thai pronounced as /tʰâː.kʰîː.lèk/, Thai meaning: "Cassod Port") is a district of the Shan State in Myanmar. It consists of one town and 295 villages. 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.
The district contains the following townships: