Jim Mullen (born 26 November 1945) is a Scottish, Glasgow-born jazz guitarist with a distinctive style, like Wes Montgomery before him, picking with the thumb rather than a plectrum.

Jim Mullen was guitarist with Pete Brown & Piblokto! for two albums in 1970. He then played with Brian Auger‘s Oblivion Express, appearing on the band’s first three albums together with future Average White Band drummer Robbie McIntosh. Mullen then joined Kokomo and later toured with the Average White Band.