Annette Sweeney (born December 9, 1957) is an American politician who is the Iowa State Senator for the 25th District. A Republican, she has been in the Iowa Senate since 2018, when she won a special election to replace Bill Dix after Dix resigned from the Senate. Prior to her election to the Senate, Sweeney was a member of the Iowa House of Representatives from 2009 to 2013.