Tai Romyen National Park () is in the east of Surat Thani Province in southern Thailand. The park consists of the northern end of the Nakhon Si Thammarat mountain range and is mostly covered with forests. It was established on 31 December 1991 and covers an area of 265,625 rai ~ in the districts Kanchanadit, Ban Na San, and Wiang Sa.

The area, especially around the hill, Khao Chong Chang, was a stronghold of communist rebels in the 1980s. From here they succeeded in killing Princess Vibhavadi Rangsit in 1977 as well as the vice-governor of Surat Thani. When the rebellion ceased in the early–1990s due to an amnesty program called Tai Romyen (literally, "cool shade in the south") and it was again safe to visit the area, the national park was established. The park was then named after the amnesty program.

Attractions in the park are the two waterfalls Muang Thuat and Than Thip, as well as the Khamin Cave. Also two former camps of the communist party can be visited, named Camp 180 and Camp 357.

Location Tai Rom Yen National Park in overview PARO 4 (Surat Thani)  National park  1 Keang Krung  2 Khao Sok  3 Khlong Phanom  4 Laem Son  5 Lam Nam Kra Buri  6 Mu Ko Ang Thong  7 Mu Ko Chumphon  8 Mu Ko Ranong  9 Namtok Ngao10 Tai Rom Yen11 Than Sadet–Ko Pha-ngan  Wildlife sanctuary12 Khuan Mae Yai Mon13 Khlong Nakha14 Khlong Saeng15 Khlong Yan16 Prince ChumphonNorth Park (lower)17 Prince ChumphonSouth Park18 Thung Raya Na-Sak  Non-hunting area19 Khao Tha Phet20 Nong Thung Thong   Forest park21 Namtok Kapo

See also List of national parks of Thailand DNP - Tai Rom Yen National Park List of Protected Areas Regional Offices of Thailand

References