Datassette, also known as John Davies, is a United Kingdom electronic musician who has been recording since the late 1990s. His work is associated with downtempo, electronic, glitch and IDM, and he is also described as working in electro and electronica.

His output covers a broad range of formats and labels, including self-released CD-Rs, net-label releases and records on independent labels. Among the labels connected with his discography are Music for Programming, Ai Records and Apollo / R+S.

The artist name is also linked to the name Margaret.