Niall O'Reilly (born 12 April 1987 in Skerries, Dublin) is an Irish footballer. O'Reilly plays as a right-back.
O'Reilly's playing days started at local club Skerries Town FC, before moving on to the Belvedere. Niall signed for Bohemians in 2005 and made rapid progression up to the Bohs First Team. O'Reilly made his league debut for Bohemians on 11 August 2005 against Bray Wanderers. He spent 2 seasons at the club and after a brief trial at UCD he signed for Shelbourne in February 2007. Niall made his Shelbourne league debut against Kildare County at Tolka Park on 9 March 2007. Despite becoming a regular name on the teamsheet for Shels, by the midpoint of the 2007 season O'Reilly found himself out of favour at Shelbourne and became part of the Reds' under 21 panel for the remainder of the season. O'Reilly was released by Shelbourne at the end of the 2007 season. O'Reilly made 15 league and cup appearances during the 2007 Season for the Tolka Park club. After a spell at St. Patrick's Athletic in which he did not make the breakthrough to the first team he joined Athlone Town in July 2009. He joined Longford Town in February 2010. O'Reilly was released by Longford in September 2012.
As a part-time footballer O'Reilly makes his living as a member of Garda Síochána having passed out in October 2009.