A masked man robbed a Canberra supermarket at knifepoint on Monday night.

ACT Policing have released security camera footage of the attack in the hope someone will recognise the offender.

Officers were called to the IGA Supermarket on Castley Circuit in Kambah just before 8:00pm.

The footage of the attack shows a man walking into the supermarket wearing a balaclava and waving a knife at a staff member behind the counter.

The offender then takes a shopping bag and demands the staff member fill it with money from the store's cash registers.

Police said no-one was injured, and the robber, who had a tattoo on his neck, was last seen running towards Boddington Crescent.