| Tvrdošín District | |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Slovakia |
| Subdivision Type1: | Region (kraj) |
| Subdivision Name1: | Žilina Region |
| Subdivision Type2: | Cultural region |
| Subdivision Name2: | Orava |
| Seat: | Tvrdošín |
| Unit Pref: | Metric |
| Area Total Km2: | 479 |
| Population Total: | 35,062 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +01:00 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +02:00 |
| Area Code Type: | Telephone prefix |
| Area Code: | 43 |
| Registration Plate Type: | Vehicle registration plate |
| Registration Plate: | TS |
| Footnotes: | District-specific vehicle registration was discontinued in 2023. |
Tvrdošín District (okres Tvrdošín) is a district inthe Žilina Region of central Slovakia. The district was first established in 1996; in 1923 it had been a part of Trstená District.