Billy Keast (born 24 November 1996) is an English professional rugby union player.
[2] Keast's father, Richard, played prop for Redruth and Cornwall.
[3][4] Keast plays for Premiership Rugby side the Exeter Chiefs.
In November 2016 he made his Chiefs debut in an Anglo-Welsh Cup clash away to Harlequins.
Keast started in the same competition a week later as the Chiefs beat Cardiff Blues 62–25 at Sandy Park.