James Owen "Jim" Sullivan is an American lawyer and Democratic politician from Milwaukee County, Wisconsin. He was a member of the Wisconsin Senate, representing the 5th Senate district during the 2007–2008 and 2009–2010 sessions.

The Ninety-Ninth Wisconsin Legislature convened from January 5, 2009, through January 3, 2011, in regular session, though it adjourned for legislative activity on May 26, 2010. The legislature also held two special sessions and four extraordinary sessions during this legislative term.