Bert and Ernie's Great Adventures (originally promoted as The Adventures of Bert and Ernie) is a stop-motion animated children's television series and segment developed by Sesame Workshop in which clay animated versions of Bert and Ernie use their imaginations to travel to strange places and into entertaining situations. The shorts are shown in the United States as inserts on Sesame Street (first appearing in season 39). Internationally, the shorts are shown as a stand-alone series in various overseas markets (the first season debuting in September 2008). The animation for the series was produced by Italy's Misseri Studio. Two seasons of 26 five-minute episodes each had been produced.

The "Secret Agents" episode has received the Gold Award for the Children's Animation category at the 2009 World Media Festival, as well as being a selection at the 2009 Annecy Animation Festival.

Production of these segments began on December 11, 2006 before their official airing in 2008.