William Frederick "Willie" Frazer (born 8 July 1960) is an Ulster loyalist activist and advocate for victims of Irish republican violence in Northern Ireland. He was the founder and leader of the pressure group Families Acting for Innocent Relatives (FAIR). He was also a leader of the Love Ulster campaign and more recently, the Belfast City Hall flag protests.
William Frazer grew up in the village of Whitecross, County Armagh as one of nine children, with his parents Bertie and Margaret. He is an ex-member of the Territorial Army, and a member of the Free Presbyterian Church of Ulster. He attended a local Catholic school and played Gaelic football. Frazer described his early years as a “truly cross-community lifestyle”. Growing up, he was a fan of the American actor John Wayne and wrestling. His father, who was a part-time member of the British Army's Ulster Defence Regiment (UDR) and a council worker, was killed by the Provisional Irish Republican Army (IRA) on 30 August 1975. The family home had previously been attacked with petrol bombs and gunfire which Frazer claimed were IRA men, due to Bertie's UDR membership. Frazer has stated that his family was well respected in the area including by "old-school IRA men" and received Mass cards from Catholic neighbours expressing their sorrow over his father's killing. Frazer believes an IRA member helped carry the coffin at his father's funeral. Over the next ten years four members of Frazer's family who were members or ex-members of the Royal Ulster Constabulary or British Army were killed by the IRA. An uncle of Frazer's who was a member of the UDR was also wounded in a gun attack.