Jonathan A. Harris (born 1964) is an American politician. Harris, a Democrat, is the former Commissioner of the Connecticut Department of Consumer Protection. He served as a state senator from Connecticut's Fifth District from 2005 to 2011. Prior to being elected to the Senate, he served as mayor of West Hartford.

Harris grew up in West Hartford and graduated from Hall High School and later from Brandeis University. He worked for U.S. Congressman Barbara Kennelly before earning a law degree from New York University.

In March 2011, Harris was appointed Deputy Treasurer of the State of Connecticut. He served until May 2012. On May 11, 2012, State Party Chair Nancy Dinardo announced that Harris would succeed Eric Hyers as the Executive Director of the Connecticut Democratic State Central Committee. In December 2014, Harris was nominated to succeed William M. Rubenstein as the Commissioner of the Department of Consumer Protection. He served as commissioner from 2015-2017.