Season 4

Rules of Engagement · 13 episodes

The fourth season of the American television comedy series Rules of Engagement premiered as a mid-season entry on March 1, 2010 and concluded on May 24, 2010. It consists of 13 episodes, each running approximately 22 minutes in length. CBS broadcast the fourth season on Monday at 8:30 pm in the United States between How I Met Your Mother and Two and a Half Men.