MOSTown (formerly Sunshine City Plaza; Chinese: 新港城中心)[1] is a shopping centre in the town centre of Ma On Shan in the Sha Tin District of Hong Kong.

The shopping arcade built with phase 4, formerly Sunshine City Plaza, is by far the largest, and has retail floor space of in excess of 175,000 square metres (1,880,000 sq ft).

The shopping centres for phases 1 to 3 are relatively small, and are collectively named MOSTown Street.

Ma On Shan Town Centre bus terminus is located underneath MOSTown.

The resulting improvement in transport has been an important factor for the increase in the number of visitors to Sunshine City Plaza (its name at that time).