Brian Patrick Lenihan (born 8 June 1994) is an Irish former professional footballer who played as a right back and midfielder.
Born in Cork, Lenihan began his career with College Corinthians. He moved to Cork City in July 2012, making a total of 27 League of Ireland appearances for them.
After receiving interest from a number of English clubs, he signed for Hull City on 31 August 2014. The transfer fee was believed to be £200,000.
He signed a one-month loan deal with Blackpool in November 2014. He made his debut on 8 November 2014 in a 3–1 away defeat to Leeds United. He returned to Hull on 25 November after sustaining a knee injury.
He made his debut for Hull on 30 April 2016 in a 1–0 away defeat to Bolton Wanderers.
Lenihan represented the Republic of Ireland under-19s.
Lenihan made his debut for the Republic of Ireland under-21s in May 2014. He was called up to the senior squad in November 2014. However, later that month he was sent back to the under-21s.