"County Fair" is a song written by Brian Wilson and Gary Usher for the American rock band The Beach Boys. It was originally released as the second track on their 1962 album Surfin' Safari. On November 26 of that year, it was released as the B-side to The Beach Boys' third single, "Ten Little Indians". The same single was released in the UK in January 1963. The melody of "County Fair" was later recycled into the song "I Do".