Abigail Thorn (born 24 April 1993) is a British YouTuber, actress and playwright, best known for producing the YouTube channel Philosophy Tube. Philosophy Tube began in 2013, when Thorn sought to provide free lessons in philosophy in the wake of the 2012 increase in British tuition fees. In 2018, her videos became more theatrical, beginning to incorporate dramatic studio sets, lighting, costuming and makeup. The channel has been positively received by critics, and has over one million subscribers.