Nicholas Julian Whalen (born June 6, 1973) is a Canadian Liberal politician, who represented the riding of St. John's East in the House of Commons of Canada from 2015 until 2019.^[1][2] Whalen was defeated in the 2019 federal election by former New Democratic MP Jack Harris in a rematch of the 2015 election.

Whalen's father, Norman Whalen, was president of the Newfoundland and Labrador Liberal Party in the 1980s, and managed Clyde Wells' 1989 election victory.^[3]

He attended Queen's University's engineering school, earning both undergraduate and graduate degrees in the field. He then earned an LLB degree in 2001 from the McGill University Faculty of Law.^[4]

Whalen practised law at the law firm McInnes Cooper, specializing in energy law, intellectual property, and corporate and commercial law. He was also, at the time of his election, the only qualified patent agent, and worked with a number of charitable organizations. He had previously served as the local Liberal Party treasurer.

Whalen's election in St. John's East over the popular NDP incumbent, Jack Harris, was considered one of the biggest surprises of the 2015 federal election.^[5][6][7]

In October 2016, Whalen responded to comments over Twitter by Earle McCurdy about the protests opposing the Lower Churchill Project over concerns of methylmercury being spilled into Lake Melville. Whalen responded by tweeting that the methylmercury levels should be monitored and people should compensate when levels are high by eating less fish.^[8] Whalen later issued an apology for that comment.^[9]

Whalen was defeated in the 2019 federal election.^[10]