Sophie Cotsis was born at Canterbury Hospital and attended Canterbury South Public, Kingsgrove Public and Kingsgrove High Schools. Ms Cotsis graduated from Macquarie University in 1995 with a Bachelor of Arts and the University of Technology, Sydney in 2001 with a Master of Legal Studies. Ms Cotsis has a range of employment experience in both the public and private sectors, including working at Sydney Airport while a student at university.
Ms Cotsis has been an active part of the many diverse multicultural communities that are found throughout NSW for many years and has a proud history of being involved in many community campaigns and causes.
Ms Cotsis first entered NSW Parliament as a Member of the Legislative Council in September 2010, and has been a member of the Shadow Cabinet since 2011. Ms Cotsis has played key roles in the establishment of the Inquiry into Affordable, Social and Public Housing and the Inquiry into Elder Abuse.