Coominya is a rural town and locality in the Somerset Region in South East Queensland, Australia. The town is located 83 kilometres (52 mi) west of the state capital, Brisbane and approximately 2 kilometres (1.2 mi) from Wivenhoe Dam. In the 2021 census, the locality of Coominya had a population of 1,029 people.

Coominya sits on the land of the Indigenous Jagera people.

Coominya is bounded by Logan Creek to the north and Buaraba Creek to the south. Although located closely between Atkinson Dam to the south-west and Lake Wivenhoe to the north-east, it does not bound either of these two reservoirs.

The Brisbane Valley Highway approximately follows its north-east border. The Brisbane Valley railway line passes through Coominya from the north-west to the south-east with the Coominya railway station serving the town. However, the railway line was closed in 1993.

From 1886 to 1906, the area was known as Bellevue (the local pastoral property). The name Coominya is believed to be derived from the Yuggera language where kung means water and nya means to see referring to its lagoons.

Coominya Post Office opened by December 1907 (a receiving office had been open from 1887, known earlier as Bellevue).

Coominya State School opened on 17 September 1912.

In 1920, the Coominya soldier settlement was established to provide opportunities for soldiers returning from World War I to establish themselves as farmers. There were 100 farms each of 30 acres (12 ha) intended for growing grapes and fruit. Like many soldier settlements in Australia, the scheme failed due to the poor quality of the land and lack of support for inexperienced farmers. The settlement closed in 1929 with only 2 farms were still operating.