Howard Waldemar Winkler (4 March 1891 – 14 November 1970) was a Liberal party member of the House of Commons of Canada. He was born in Morden, Manitoba and became a farmer by career.

Winkler graduated from the University of Manitoba with a Bachelor of Arts in 1912, and a BSA in 1916.^[2] He also served in the military as a member of the 11th Canadian Field Ambulance unit in World War I with some duties in France.^[1][2] His father, Valentine Winkler, was a member of the Legislative Assembly of Manitoba who was provincial Minister of Agriculture from 1915 to 1920.^[1][2]

He was first elected to Parliament at the Lisgar riding in the 1935 general election and re-elected there in 1940, 1945 and 1949. Winkler left the House of Commons after completing his fourth and final term of federal office and did not seek re-election in the 1953 election.

Winkler's uncle was former MLA and Legislative Speaker Enoch Winkler.

Winkler died in the United States in 1970 at Mesa, Arizona.^[1]