Murray-Wellington is an electoral district of the Legislative Assembly in the Australian state of Western Australia.

The seat has alternated between the names Murray and Murray-Wellington to reflect its geography.

Its major population centres include the towns of Dwellingup, Harvey, North Dandalup, North Yunderup, Pinjarra, South Yunderup and Waroona as well as the northern Bunbury suburbs of Australind and Leschenault.

The district's most famous member was Ross McLarty, Premier of Western Australia between 1947 and 1953, who held the seat from 1930 to 1962.

The seat's current Labor member, Robyn Clarke, arrived as a result of the 2017 state election.