Mari Holm Lønseth (born 29 August 1991) is a Norwegian jurist and politician. A member of the Conservative Party, she has served as member of parliament for Sør-Trøndelag since 2017.
Political career Youth politics Holm Lønseth was a member of the Norwegian Young Conservatives of Trondheim, which she also led between 2010 and 2011. She went on to join the Sør-Trøndelag county branch of the Young Conservatives, which she led between 2011 and 2013.
Local politics She was elected to the Trondheim Municipal Council at the 2011 local elections. She was re-elected in 2015 and sat until 2019.
Parliament Holm Lønseth was elected to the Storting, the Norwegian parliament, at the 2017 election and won re-election in the 2021 election and the 2025 election. While she was on parental leave in 2025, Guro Angell Gimse (pre-2025 election) and Henrik Gottfries Kierulf (post-2025 election) was deputising for her at the Storting.
Personal life Holm Lønseth married Progress Party member of parliament Sivert Bjørnstad in March 2024. They welcomed their first child, a son, in March 2025.
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