Mary Therese Hansen (1 November 1966 – 9 December 2002) was an Australian-born guitarist and singer. She was a member of United Kingdom-based alternative music group Stereolab from 1992. As a member of that band, Hansen recorded six studio albums from Transient Random-Noise Bursts with Announcements (August 1993) to Sound-Dust (August 2001). As a side-project, in late 1999 she formed the space rock group Schema with members of Seattle-based band Hovercraft, and they issued their debut album, Schema, on 19 September 2000. On 9 December 2002 a truck hit and killed Hansen while she was bicycling in London. She was 36 years old.