Stewart Edgertson McLean (21 November 1913 – 13 April 1996) was a Manitoba politician. He served as a cabinet minister in the governments of Dufferin Roblin and Walter Weir, and unsuccessfully ran for the leadership of the Progressive Conservative Party of Manitoba in 1967.
The son of David McLean, he was born and raised in Dauphin, Manitoba, and received a B.A. and an LL.B. from the University of Saskatchewan. McLean came down with tuberculosis before he entered service in the Royal Canadian Air Force during World War II. He was called to the Manitoba bar in 1945, and served as Mayor of Dauphin from 1955 to 1958. after falling to 73. Most of his supporters voted for Weir, the winning candidate, on the third and final ballot.
Weir initially kept McLean as Provincial Secretary and Public Works Minister, but shifted him to the Ministry of Transportation on 24 September 1968.