Conor Ciaran Masterson (born 8 September 1998) is an Irish footballer who plays as a centre-back for EFL League Two club Gillingham.

[6] He was named on the bench for Liverpool's UEFA Champions League 3–0 quarter final victory against Manchester City on 4 April 2018.

[7][8] He was named in Liverpool's Premier League squad for the match against Everton on 7 April 2018 and was included on the substitutes' bench.

[21] On 6 March 2014, Masterson made his debut for Republic of Ireland Under-17s in a 2–1 friendly win over Austria at Dalymount Park.

[4] He was first called up to the Under-21 side in March 2019 ahead of a European Championships qualifier against Luxembourg, going on to play the full 90 minutes in a 3–0 victory.