Mary Therese Hansen (11 January 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 Hansen was killed in a cycling accident when she was hit by a truck in London. She was 36 years old.
Mary Therese Hansen was born on 11 January 1966 in Maryborough, 255 kilometres (158 mi) north of the state capital, Brisbane. Her father, Brendan Percival Hansen, OAM (21 August 1922 – 19 December 1999), was a unionist and Australian Labor Party parliamentarian – both federal (member for Wide Bay from 1961 to 1974) and state (member for Maryborough from 1977 to 1983); and her mother Moira Ann Hansen (née O'Sullivan), was a light opera singer and is contributor to the Maryborough arts community. Her parents are both descended from Irish families. Brendan's parents were Percy Hansen and Mary Ann (née Rowley). On 11 June 1960 Brendan and Moira married at St Mary's Catholic Church, Maryborough. Mary Hansen was one of eight children, with her three brothers John, Tim and Jerry and her four sisters Jenny, Maureen, Susie and Kate. Hansen was trained by Moira and entered eisteddfodau, she left secondary school at age of 17 and worked in a bank.