Sean O'Brien (born 13 October 2001) is an English professional footballer who plays as an attacking midfielder and striker for club Kingstonian.
O'Brien began his career with Millwall, moving on loan to Bromley in August 2021. After leaving Millwall he signed for Forest Green Rovers in September 2022. He joined Gloucester City on loan in November 2022.
He was released by Forest Green at the end of the 2022âÂÂ23 season.
In May 2025, O'Brien joined Isthmian League South Central Division side Kingstonian.
O'Brien has been described by the BBC as a "versatile forward" who can play "as a central striker or attacking midfielder".