# The 20 largest provinces in Thailand

Chiang Mai is Thailand's largest province, covering more than 22,000 square kilometres, followed by Nakhon Ratchasima and Kanchanaburi. The 20 provinces with the largest area, according to the Department of Provincial Administration of the Ministry of Interior.

- 24 votes · 20 items
- Dec 1, 2025 · ศิริพร
- https://even.best/en/l/5431/the-20-largest-provinces-in-thailand

## Top 20

1. **Nakhon Ratchasima Province** (5 · ▲5 ▼0) — No. 2. Area: 20,493.964 km². The largest province in the Northeast (Isan).
2. **Tak Province** (3 · ▲3 ▼0) — No. 5. Area: 13,952.997 km².
3. **Surat Thani Province** (3 · ▲3 ▼0) — No. 6. Area: 12,891.469 km². The largest province in the South.
4. **Chiang Mai Province** (2 · ▲2 ▼0) — No. 1. Area: 22,311.074 km². Thailand's largest province.
5. **Lampang Province** (2 · ▲2 ▼0) — No. 10. Area: 12,533.961 km².
6. **Khon Kaen Province** (2 · ▲2 ▼0) — No. 15. Area: 10,885.991 km².
7. **Buriram Province** (2 · ▲2 ▼0) — No. 17. Area: 10,322.885 km².
8. **Ubon Ratchathani Province** (1 · ▲1 ▼0) — No. 4. Area: 15,774.000 km².
9. **Chaiyaphum Province** (1 · ▲1 ▼0) — No. 7. Area: 12,778.287 km².
10. **Kanchanaburi Province** (0 · ▲1 ▼1) — No. 3. Area: 19,483.148 km².
11. **Mae Hong Son Province** (0 · ▲0 ▼0) — No. 8. Area: 12,681.259 km².
12. **Phetchabun Province** (0 · ▲0 ▼0) — No. 9. Area: 12,668.416 km².
13. **Udon Thani Province** (0 · ▲0 ▼0) — No. 11. Area: 11,730.302 km².
14. **Chiang Rai Province** (0 · ▲0 ▼0) — No. 12. Area: 11,678.400 km².
15. **Nan Province** (0 · ▲0 ▼0) — No. 13. Area: 11,472.072 km².
16. **Phitsanulok Province** (0 · ▲0 ▼0) — No. 16. Area: 10,815.854 km².
17. **Nakhon Si Thammarat Province** (0 · ▲0 ▼0) — No. 18. Area: 9,942.502 km².
18. **Sakon Nakhon Province** (0 · ▲0 ▼0) — No. 19. Area: 9,605.764 km².
19. **Nakhon Sawan Province** (0 · ▲0 ▼0) — No. 20. Area: 9,597.677 km².
20. **Loei Province** (-1 · ▲0 ▼1) — No. 14. Area: 11,424.612 km².

How is this ranking ordered? By people's votes: each ▲ adds a point and each ▼ takes one away. Anyone can vote and add what is missing.