Caolan Englefield (born 1 November 1999) is an English-born Irish rugby union player for Gloucester in the Premiership Rugby.
A graduate from Old Rutlishians RFC in Merton, London. He joined the AASE programme whilst educated at St Paul's Catholic College at Sunbury-on-Thames. He was part of Harlequins junior academy at age 13 before joining London Irish. He earned his degree in Sports Coaching at St Mary's University, Twickenham.
Englefield represented Ireland U18s played against English Counties twice and against Portugal U18s. He played for Ireland U19s, first against Japan U19s and in a two-test series against France U19s.
Englefield signed professional terms with London Irish from the summer of 2019. He made his debut from the bench against Harlequins in the Premiership Rugby Cup during the 2019–20 season. He scored his first try against Bristol Bears in the following PRC match. Englefield made his Premiership debut against Saracens later in the same season.
London Irish filed for administration and are suspended from the Premiership and all leagues in the RFU. Englefield signed with rivals Gloucester with four other Exile teammates from the 2023–24 season.