Seen this article today, about the best restaurants in Asia, and here are the ones that are in Thailand:
2. David's Kitchen, Chiang Mai
9. Le Normandie, Bangkok
10. The Reflexions at The Athenee Hotel, Bangkok
15. Siam Supper Club, Choeng Thale, Phuket
17. Cafe des Amis Fine Dining, Pattaya
See more on TripAdvisor article here