Francis Gilles Poullain-Patterson (born 15 April 1967), better known as Frankie Poullain, was the bass player for rock band The Darkness. He was born in Edinburgh, Scotland.

Poullain was the only original Darkness member not from the Lowestoft area. Before joining the Darkness, he was a tour guide in the Venezuelan mountains.

Poullain left the band on May 23, 2005, "musical differences" being cited as the reason. Frankie has disputed this version of events, claiming he was "frozen out" and forced to leave the band. He was replaced by Richie Edwards, a former guitar tech for the band. His departure caused quite a stir with the press, most notably in NME magazine where he was reportedly regarded as their favourite member of the band.

Frankie plays a Gibson Thunderbird IV bass, recognisable from its reverse body design. When playing live he allowed natural distortion to take place for effect.