Ipswich Girls' Grammar School (IGGS) is an independent, non-denominational, day and boarding school for girls in Ipswich, Queensland, Australia.

Ipswich is a city in South East Queensland, Australia. Situated on the Bremer River, it is approximately 40 kilometres (25 mi) west of the Brisbane central business district. The city is renowned for its architectural, natural and cultural heritage. Ipswich preserves and operates from many of its historical buildings, with more than 6000 heritage-listed sites and over 500 parks. Ipswich was founded in 1827 as a mining settlement. The suburb of the same name is its central business district. In the 2021 census, the population of the urban area of Ipswich was 115,913 people.