"Atlantic Inferno" is the 27th episode of Thunderbirds, a British Supermarionation television series created by Gerry and Sylvia Anderson and filmed by their production company AP Films (APF; later Century 21 Productions) for ITC Entertainment. Written by Alan Fennell and directed by Desmond Saunders, it was first broadcast on 2 October 1966 on ATV London and Anglia Television as the first episode of Series Two. It had its first UK-wide network broadcast on 17 April 1992 on BBC2.