Toowoomba Grammar School is an independent, non-denominational, day and boarding grammar school for boys, in East Toowoomba, Toowoomba, Toowoomba Region, Queensland, Australia. Toowoomba Grammar was established in 1875, the third school to be established under the Grammar Schools Act 1860. It has a non-selective enrolment policy and currently caters for approximately 1,150 students from Prep to Year 12, including 300 boarders from Years 5 to 12. Some of the Toowoomba Grammar School buildings are listed on the Queensland Heritage Register.