Ipswich Girls' Grammar School (IGGS) is an independent, non-denominational, day and boarding school for girls, in Ipswich, Queensland, Australia. The school is one of the eight original 'Queensland Grammar Schools'. These schools are independent, non-denominational, not-for-profit statutory bodies of the Queensland Government. They are not linked to, administered, or governed by any religious organisation or specific style of education. The school is a member of the Queensland Girls' Secondary Schools Sports Association (QGSSSA).