Anton Bernard Weselak (11 February 1918 – 17 January 1989) was a Canadian lawyer and politician. Weselak was a Liberal party member of the House of Commons of Canada. He was born in Beausejour, Manitoba and became a lawyer after studies at the Manitoba Law School. During the 1956 Suez Crisis, Weselak was part of Lester B. Pearson's delegation to the United Nations. Pearson was then External Affairs minister under the Louis St. Laurent government, and his efforts led to the formation of United Nations peacekeeping force which defused a full-scale Middle Eastern war.