Mark Warriedar Nevill (born 1 July 1947) is a former Australian politician.
He was born in North Fremantle and was a geologist before entering politics.
In 1983 he was elected to the Western Australian Legislative Council as a Labor member for South-East Province, moving to Mining and Pastoral in 1989.
He was a parliamentary secretary from 1990 to 1993, when he became Deputy Leader of the Opposition in the Council, holding a variety of shadow portfolios until he lost the position in 1997.
On 23 August 1999 he resigned from the Labor Party to sit as an independent.