Walter Lengerke (born 1935) is a former Canadian politician, who represented Whitehorse Riverdale on the Yukon Territorial Council from 1975 to 1978. Prior to his election to the territorial council, Lengerke served as city manager of Whitehorse. After Willard Phelps was disqualified from office on a conflict of interest ruling in 1975, Lengerke ran in the resulting by-election on November 3, which he won over future Whitehorse mayor Don Branigan. In one of his first actions on the council, he proposed a motion to limit the number of trucking permits that could be issued to trucking firms from outside Yukon, but he soon withdrew the motion on the grounds that it needed further study.