Seamus Thomas Harris O'Regan is a Canadian politician who has been the federal minister of labour since October 26, 2021, and minister of seniors since July 26, 2023. A member of the Liberal Party, O'Regan was elected to the House of Commons in 2015, representing St. John's South—Mount Pearl. He has been in Cabinet since 2017, previously serving as minister of natural resources from 2019 to 2021, minister of Indigenous services in 2019, and minister of veterans affairs and associate minister of national defence from 2017 to 2019. Before he entered politics, O'Regan was a correspondent with CTV National News, and a host of Canada AM, which he co-hosted from 2003 to 2011 with Beverly Thomson.

The minister of Labour is the minister of the Crown in the Canadian Cabinet who is responsible for the labour portfolio of Employment and Social Development Canada. From 2015 to 2019, the portfolio was included in that of the Minister of Employment, Workforce Development and Labour, but was split in 2019 during the government of Justin Trudeau. The office has been held by Seamus O'Regan since 2021, who is also the Minister of Seniors.