Leonard Leroy Boswell (January 10, 1934 – August 17, 2018) was an American politician who served as the U.S.
Representative for Iowa's 3rd congressional district from 1997 to 2013, a district based in Des Moines.
A member of the Democratic Party, he was defeated for reelection in 2012 by 4th district incumbent Tom Latham, who decided to run against him after redistricting.