Leona Alleslev-Krofchak (born March 16, 1968) is a Canadian politician and former military officer who served as the member of Parliament (MP) for Aurora—Oak Ridges—Richmond Hill. She was elected as a Liberal in the 2015 federal election, and crossed the floor to join the Conservative Party in 2018, citing disagreements with the Liberal government over their handling of economic and foreign affairs. On October 21, 2019, she was re-elected as a Conservative. Alleslev was defeated in the 2021 federal election. Alleslev was a candidate in the 2022 Conservative leadership election.