Gary Longwell (born 30 July 1971 in Belfast) is an Irish international rugby player. His usual position is as a lock, or second row. He spent his entire career playing for Irish provincial side Ulster, making his debut aged 19 in 1991. He was part of the Heineken Cup-winning Ulster team of 1999 in the 21–6 victory over Colomiers at Lansdowne Road in Dublin. In 2015, he was inducted into the Newtownabbey Hall of Fame