Ben Hamilton Johnston (born 25 April 1980) is a drummer, vocalist, songwriter and member of Scottish group Biffy Clyro.

Having previously played drums with schoolfriend Simon Neil and brother James Johnston in a band called Skrewfish in 1995, Simon moved to Glasgow whilst Ben and James stayed in Ayrshire.

When Ben was in College he fronted a Rage Against the Machine tribute band Raj Against The Shereen as revealed in an interview with Biffy Clyro at Reading Festival where they (Biffy Clyro) performed a cover version of the song "Killing in the Name".

Ben is married to Louise Johnston and they live together in Ayrshire with their son Ross.

Biffy's Tour Manager Neil told fans on the BC forum that Ben is now using a 'Pearl Eric Singer Signature Snare Drum' and is waiting for a new totally custom Pearl Masters Kit New Kit Pearl Masters Colour :Black 22x18" Bass drum, 12x8" Rack tom, 14x14" and 16x16" floor toms Drum Heads: Bass Drum: BATTER: Aquarian coated superkick 2 RESONANT: Coated Pearl Masters Pro Tone Snare: BATTER: Aquarian coated Hi-Energy RESONANT: Hi-Performance Snare Bottom Rack tom, first floor and second floor: BATTER: Remo Pinstripes RESONANT: Remo Ambassador