Summer Girl is the sixth studio album by American rock band Smash Mouth, released on September 19, 2006 through Beautiful Bomb Records.

This is the last album featuring original guitarist and songwriter Greg Camp.

An instrumental version of "So Insane" was also used in the opening of the infamous ABC series Cavemen, in its unaired pilot.

It was used to advertise the CBS sitcom, The King of Queens, when the show entered its final season.

It was also heard in an America's Funniest Home Videos blooper compilation.