Trang (Thai: ตรัง, Thai pronunciation: [trāŋ]; Malay: Terang), also called Mueang Thap Thiang, is one of the southern provinces (changwat) of Thailand, on the west side of the Malay Peninsula facing the Strait of Malacca.

Neighboring provinces are (from north clockwise) Krabi, Nakhon Si Thammarat, Phatthalung, and Satun.

The estuary of the Trang River together with the Hat Chao Mai Marine National Park[6] and Ko Libong Non-hunting Area are also registered Ramsar wetlands.

[8] The province was once a part of the Srivijaya empire, an ancient Hindu-Buddhist Melayu Kingdom and the Malay Sultanate of Kedah until 1810.

It was moved again to its present location 26 km inland in 1916 by King Rama VI because of repeated flooding.

Trang was the first area of Thailand where rubber trees were planted, brought there by governor Phraya Ratsadanupradit Mahison Phakdi from British Malaya in 1899.

The provincial slogan เมืองพระยารัษฏา ชาวประชาใจกว้าง ถิ่นกำเนิดยางพารา เด่นสง่าดอกศรีตรัง ปะการังใต้ทะเล เสน่ห์หาดทรายงาม น้ำตกสวยตระการตา translates as "Phraya Rasda's town, generous people, delicious roast pork, the first city where para rubber was planted, the Si Trang provincial flower, underwater coral reefs, scenic beaches and waterfalls.

As of 26 November 2019 there are:[10] one Trang Provincial Administration Organisation (ongkan borihan suan changwat) and 22 municipal (thesaban) areas in the province.

The non-municipal areas are administered by 77 Subdistrict Administrative Organisations - SAO (ongkan borihan suan tambon).

Rail: Trang is one of the southern destinations offering trains to Krung Thep Aphiwat Central Terminal.