The eighth season of the American television comedy series How I Met Your Mother was announced in March 2011 along with confirmation of the seventh season. The season premiered on September 24, 2012 and concluded on May 13, 2013.

How I Met Your Mother is an American sitcom, created by Craig Thomas and Carter Bays for CBS. The series, which aired from September 19, 2005, to March 31, 2014, follows the main character, Ted Mosby, and his group of friends in New York City's Manhattan. As a framing device, Ted, in 2030, recounts to his son, Luke, and daughter, Penny, the events from September 2005 to May 2013 that led him to meet their mother. How I Met Your Mother was a joint production by Bays & Thomas Productions and 20th Century Fox Television, and syndicated by 20th Television.