Flathead EP is an EP released only in the US by Scottish band The Fratellis. It was released physically in American music shops on January 23, 2007, and was previously available on the iTunes Music Store in America from December 19, 2006 (each song costs 99¢, thus making it $3.96 for the EP). Additionally, the song "Flathead" has been used in iTunes Television Commercials.

The EP consists of two album tracks, ("Henrietta" & "Flathead") and two B-sides released on the singles in the UK - "Stacie Anne" was on "The Fratellis EP" and "Cigarello" was the B-side to "Henrietta".

It is one of very few rock songs to have a riff in 7/8 time; most rock songs are in 4/4 or occasionally 6/8.