Robert Lantz (born 1969/1970) is a Canadian politician who has served as the 34th premier of Prince Edward Island since February 9, 2026; he previously held the position from February to December 2025. A member of the Progressive Conservative Party of Prince Edward Island (PC), Lantz has served as the party's leader three times: from February to September 2015, from February to December 2025 as interim leader, and since February 9, 2026.
From 2006 to 2014, Lantz was a member of the Charlottetown City Council. He was elected as PC leader for the first time at a leadership election on February 28, 2015. After resigning as leader following the 2015 provincial election, Lantz was elected as the MLA for Charlottetown-Brighton in 2023. He served in the Dennis King Cabinet and assumed the premiership following King's resignation; Lantz briefly resigned as interim PC leader to run in the 2026 leadership election, which he won.
Lantz led the PC party in the 2015 provincial election, but fell 24 votes short in his attempt to win his own seat representing the riding of Charlottetown-Brighton in the provincial legislature. The margin was reduced to 22 votes after a recount. Lantz resigned as PC leader on September 23, 2015. Lantz won that seat in the 2023 general election.
Following a commanding victory in the April 3, 2023, provincial election (defeating PEI NDP leader Michelle Neill), Prince Edward Island Premier Dennis King unveiled his new cabinet. On October 9, 2024, following the resignation from cabinet of Natalie Jameson, Lantz was appointed the Minister of Education and Early Years. Lantz was previously Minister of Housing, Land and Communities.
On February 21, 2025, Lantz became the province's 34th premier and interim PC leader after the resignation of Dennis King. As premier, he also served as Minister responsible for Indigenous Affairs and Minister responsible for Intergovernmental Affairs. He initially declined to seek the permanent leadership. During his first tenure, he signed agreements with other provinces to reduce interprovincial trade barriers in the midst of the United States trade war with Canada. On December 11, 2025, he announced his pending resignation from both positions, effective December 12, 2025, to run in the 2026 Progressive Conservative Party of Prince Edward Island leadership election. Deputy Premier Bloyce Thompson, also the Minister of Justice, was sworn in as his successor. His opponent, Mark Ledwell, accused Lantz of using the resources of government to help his campaign; Lantz refused these claims. During the campaign, he received endorsements from the majority of PC caucus members. During debates, he supported building a tunnel from the province to Nova Scotia. Lantz won the election, defeating Ledwell. He was re-appointed as premier on February 9, 2026.
Lantz lives in Charlottetown-Brighton with his wife, Kelly, and his two children. Rob Lantz is the brother of Jeff Lantz, a former Prince Edward Island MLA and current Provincial Court judge.