Philip A. Luty (1965 - 8 April 2011) was an English activist opposing gun control, who was notable for the production of homemade firearms and manuals providing instruction in the same. He was charged with illegal arms construction in the late 1990s and sentenced to four years in prison, with other investigations ongoing at the time of his death. Weapons based on Luty's designs have been used or found in numerous recorded incidents of criminal or terrorist activity, including criminal groups in Australia, Brazil, Romania, Sweden, Ecuador, the United Kingdom, with terrorist organisations in Indonesia, and in an antisemitic terror incident in Germany.