Jenica Atwin is a Canadian politician who was elected to represent the riding of Fredericton in the House of Commons of Canada in the 2019 Canadian federal election. Atwin was the first Member of Parliament of the Green Party of Canada to be elected outside of British Columbia and the first woman to be elected in the riding of Fredericton. In June 2021, she crossed the floor from the Green Party to the Liberal Party of Canada, and was re-elected as a Liberal three months later in the 2021 federal election.

The 2019 Canadian federal election was held on October 21, 2019. Members of the House of Commons were elected to the 43rd Canadian Parliament. In keeping with the maximum four-year term under a 2007 amendment to the Canada Elections Act, the writs of election for the 2019 election were issued by Governor General Julie Payette on September 11, 2019.