Dwayne Kenneth Lowdermilk (born January 9, 1958) is a Canadian retired ice hockey defenceman.
He played two games in the National Hockey League for the Washington Capitals during the 1980–81 season.
He was selected by the New York Islanders in the 1978 NHL Entry Draft.
Lowdermilk was born in Burnaby, British Columbia.
This biographical article relating to a Canadian ice hockey defenceman born in the 1950s is a stub.