Alan Ross McWhirter (12 August, 1925 - 27 November, 1975) was, with his twin brother, Norris McWhirter, co-founder of the Guinness Book of Records.

Ross McWhirter's political views and outspoken comments on the Northern Ireland situation made him a potential target for terrorism. When, in 1975, he offered a £50,000 reward for information leading to the conviction of a group responsible for several bombings in London, he became a target for the gang. He became one of the handful of high-profile Britons (including Airey Neave and Lord Louis Mountbatten) to be murdered by Irish terrorist groups when he was shot by the Provisional IRA gang on the doorstep of his home in Private Road, Enfield.