"Say Yeah" is a song by the Americanhard rock band Kiss. It was released on their nineteenth album Sonic Boom in 2009. It was released as a single on December 8, 2009. The song is the last featured on the album. Kiss played the song for the first time October 26 in Atlanta, Georgia.
Paul Stanley, the sole writer of the song, said about it: "It was a song I knew was going to be great... I knew what this song was and its turned out exactly the way I had hoped, and really better. The band has four great voices so when we do a chorus together it sounds like the world singing." The song is about how we shouldn't be wasting time and over-thinking things.