Adam Milner (born 19 December 1991) is an English professional rugby league footballer who plays as a loose forward or hooker for the Oldham RLFC in the RFL Championship.

Having come through the Tigers' academy system, Milner made his Super League début against Huddersfield Giants on Sunday 4 July 2010.

Prior to the 2011 season, Milner was given the number 16 shirt, with Castleford head coach Terry Matterson saying "I think he's going to get plenty of first team footy this year.

"[11] Head coach Daryl Powell said, "both his attacking game and his toughness in defence are developing every week and I know he will continue to work hard to achieve his undoubted potential.

[4] He mostly played as a hooker, but switched position to loose forward towards the end of the campaign due to mounting injuries in the squad.

[16] He played a crucial role in Castleford's play-off semi-final golden point victory over St. Helens - just minutes after making a try-saving tackle on Tommy Makinson, he burrowed his way over the line for a try under the sticks.

[18][19][20] Milner kicked the first goal of his career on Castleford's visit to the Warrington Wolves on 8 June 2018, in the absence of the Tigers' first choice 5 kickers.

It was Milner's try from dummy half against the Wigan Warriors on 5 April 2019 that completed the Tigers' comeback from a 20-point deficit, in a game they went on to win.

[24] He opened the scoring in Castleford's Elimination final victory over the Warrington Wolves in the play-offs, touching down a deft Paul McShane kick.

[29] In August, it was announced that Milner had signed a new two-year deal with Castleford; "To remain a one-club man, which is something I pride myself on, is a proud moment, I am excited for what is to come," he said.

"[39][40] On 19 May 2023, Huddersfield Giants head coach Ian Watson first confirmed his interest in signing Milner, who was in the final year of his Castleford contract.

[44] In the build up towards his Wheldon Road return in August, Milner admitted, "It's not just another game," and said, "It'll be nice to see some familiar faces, not just the playing squad but the backroom staff, supporters and sponsors.

[51][52][53] In July 2018, Milner was called up to the England Elite Performance Squad for the second phase of the season, in the build up towards the International Test Series against New Zealand later in the year.