Ma On Shan (Chinese: 馬鞍山) is a new town along the eastern coast of Tolo Harbour in the New Territories of Hong Kong.

Situated in the northeastern part of Sha Tin District, the town is built on the strip between Tolo Harbour and Ma On Shan mountain.

Due to the 1970s energy crisis the progressing New Town development and unprofitability, Ma On Shan Iron Mine was closed in 1976.

The species, which is found only on Ma On Shan and a few nearby sites, blooms in April with colours ranging from white to light red.

The event is organised by Sha Tin East Area Committee of the District Council, Sha Tin District Office, Civil Engineering and Development Department, Leisure and Cultural Services Department, Ma On Shan Promotion of Livelihood and Recreation Association, the MTRC and various other bodies.

Indian muntjac (Muntiacus muntjak): The natural habitat of this deer species includes Hong Kong and goes as far west as India, Pakistan and Afghanistan.

It is an associated shopping centre built together with the residential estate of Bayshore Towers, developed by Cheung Kong Holdings.

MOSTown also houses a large "Citistore" department store selling clothes, mattresses, beds, toys, electrical appliances, luggage and more.

Numerous restaurants can be found in the plaza including local Cantonese eateries and branches of Western chains such as McDonald's and KFC.

The Ma On Shan Public Library, completed in 2005, is within walking distance from the sports centre and the swimming pool.

Passengers can change at Tai Wai or Hung Hom to the East Rail line for service to Hong Kong Island, Kowloon or the mainland border crossings at Lo Wu and Lok Ma Chau, Diamond Hill or Ho Man Tin to the Kwun Tong line for service to Kowloon, Nam Cheong to the Tung Chung line for service to Hong Kong Island, Tsing Yi, or Lantau Island, or Mei Foo to the Tsuen Wan line for service to Hong Kong Island, western Kowloon, or Tsuen Wan.

The city is served by several bus termini, with the ones in Ma On Shan Town Centre and Lee On being notable.

The constituency is currently represented by Stanley Li Sai-wing of the DAB and Connie Lam So-wai of Professional Power.