Sean Ryan Moore (born 13 August 2005) is an Irish footballer who plays as a winger and full back for League of Ireland Premier Division club Shelbourne.
Born in Belfast, Moore began his career with Cliftonville.
On 8 January 2022, Moore debuted in the Irish Cup against Islandmagee at the age of 16. His first start came against Larne on 15 October, a match in which he was sent off in the 50th minute as Cliftonville were beaten 4âÂÂ0. In the return fixture, he scored his first senior goal as Cliftonville defeated Larne 2âÂÂ1 on 2 January 2023.
His form saw him linked with a move away from the club in January 2023. On 25 February, he scored both goals in a 2âÂÂ1 league victory over Glentoran.
At the end of his breakthrough season, Moore was named in the 2022âÂÂ23 NIFL Premiership Team of the Year and was awarded NI Football Writers' Association Young Player of the Year.
In June 2023, he signed for Premier League club West Ham United on a three-year contract.
During his two seasons in East London, Moore made 52 appearances for West Ham's under-21 team, scoring ten goals.
On 27 July 2025, Moore signed for League of Ireland Premier Division club Shelbourne on a multi-year contract for an undisclosed fee. In September 2025, Shelbourne manager Joey O'Brien left Moore out of the club's League Phase squad for the UEFA Conference League.
Moore has represented Northern Ireland at under-18 level. In 2023, he switched allegiances to the Republic, making his debut for the under-19 team against Greece. In November 2024, he received his first call up to the Republic of Ireland U21 squad for their two friendlies against Sweden U21 in Marbella, Spain. He made his debut in a 2âÂÂ0 defeat to Sweden on 14 November 2024.