"I'm on a Boat" is a single from The Lonely Island's debut album Incredibad. It was also featured as a Saturday Night Live Digital Short. The song features R&B singer T-Pain. The song, produced by Wyshmaster, is a parody of many rap video clichés, especially the music video for the Jay-Z song "Big Pimpin'." The music video reached number one on YouTube in February 2009 and was number one on the US iTunes music video chart. The song was nominated for Best Rap/Sung Collaboration at the 52nd Grammy Awards. The Lonely Island has also performed the song live on Late Night with Jimmy Fallon with Black Thought filling in for T-Pain. The trio also performed an altered clean version for a "Classroom Instruments" segment on The Tonight Show Starring Jimmy Fallon. The song went platinum.

The Lonely Island is an American comedy trio, formed by Andy Samberg, Jorma Taccone, and Akiva Schaffer in Berkeley, California, in 2001. They have written for and starred in the American TV program Saturday Night Live (SNL).