Benoît Guy Robert "Ben" Costil (born 3 July 1987) is a French professional footballer who plays as a goalkeeper.

[6] On 16 July 2022, newly promoted Ligue 1 team Auxerre announced the signing of Costil for free, on a one-year deal.

[9] On 12 May 2016, Costil was called up to France manager Didier Deschamps' 23-man squad for UEFA Euro 2016 as the third goalkeeper behind captain Hugo Lloris and Steve Mandanda.

[citation needed] He made his debut on 15 November against Ivory Coast, playing the whole game, also captaining his side in a 0–0 home draw.

[10] On 17 May 2018, he was included in a preliminary 35-man French squad for the 2018 FIFA World Cup in Russia alongside Anthony Martial, but did not make the final 23.