Hamza Andreas Tzortzis (Greek: Χάμζα Ανδρέας Τζώρτζης; born 1980[1]) was a British Muslim apologist, public speaker and a researcher on Islam.

[4][5] Tzortzis was involved in publishing a survey study in 2010 to gauge non-Muslims' views of Islam in the United Kingdom.

[9] Andrew Gilligan described Tzortzis in a 2010 The Telegraph article as "a former researcher for the hardline Hittin Institute and chaired the launch event of iERA, an umbrella organisation hosting many well-known British Muslim extremists who preach opposition to democracy and hatred against homosexuals and Jews.

[10] After Keele University cancelled a speech by Tzortzis, the Stoke Sentinel called him a "radical Islamic speaker ... a former member of the radical group Hizb ut-Tahrir which believes in the idea of an Islamic state ... who supports Sharia law ... [and has] also been linked to controversial comments on homosexuality and a series of other issues.

[5] In 2016 India's National Investigation Agency (NIA), in a chargesheet against the Islamic State, named Tzortzis as having directly or indirectly influenced suspects accused of having links with ISIS.