Mersing (Chinese: 丰盛港) is a town in Mersing District, Johor, Malaysia.
Mersing town (estimated population in 2009: 21,670) is a town visited by Malaysians and foreign tourists on the way to the Tioman Islands.
Mersing town is particularly significant for a number of reasons: it is one of only two major towns situated in the eastern half of Johor state (the other being Kota Tinggi), it lies on the main trunk road that connects southern as well as eastern Johor with the east coast of Pahang state including Pahang's capital Kuantan (part of Federal Route ), and it is the main departure point for ferries to the nearby offshore islands such as Tioman Island.
Mersing is a federal constituency in Johor, Malaysia, that has been represented in the Dewan Rakyat since 1986.
The federal constituency was created in the 1984 redistribution and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.