Mueang Sing (Thai: เมืองสิงห์, pronounced [mɯ̄a̯ŋ sǐŋ]) is a historical park in Sai Yok District, Kanchanaburi Province, Thailand.

In the reform of provincial administration at the end of the 19th century its status was reduced from Mueang to Tambon (commune).

Built in the Bayon-style, the temples date to the Khmer kingdom in the reign of King Jayavarman VII (1180 to 1219).

A stone inscription of Prince Vira Kumara praising his father, 23 cities are named.

One of these cities was named Srichaiya Singhapura, which some scholars identify with Mueang Sing.