Mary Gabrielle (Gay) Thompson (born 29 January 1948) was the Labor member for the South Australian House of Assembly electoral district of Reynell from 1997 to 2014.
Thompson graduated with a Bachelor of Arts degree at the University of Adelaide. Before entering politics she was a quality consultant and an official of the Administrative and Clerical Officers Association.[1] Thompson is and has been actively involved in many community committees and programs.
The 2006 election saw Thompson increase her margin to 17.6%.
She served as Deputy Speaker and Chairman of Committees.
Thompson did not re-contest her seat at the 2014 election.[2]