Miallo is a rural locality in the Shire of Douglas, Queensland, Australia. In the , Miallo had a population of 406 people.
Miallo consists of flat land (about 10 metres above sea level) which is used for farming surrounding a mountainous area rising to Mount Somerset (), a peak above sea level. The crops grown are sugarcane and tropical fruit.
There is a cane tramway system through Miallo to deliver sugarcane to the sugar mill at Mossman.
Thooleer is a neighbourhood in the locality ().
The name Miallo is an Aboriginal word, meaning wild country.
Mialloa Provisional School opened on 2 October 1911. It became Miallo State School on 30 July 1923.
On Sunday 20 December, St Anthony's Catholic Church was officially opened and dedicated by Bishop Thomas Cahill. It was a reconstruction of a building bought from Lawrence Butler Rutherford. Prior to the construction of the church, Mass had been held in private homes.
In the , Miallo had a population of 376 people.
In the , Miallo had a population of 406 people.
Miallo State School is a government primary (Prep-6) school for boys and girls on Miallo Bamboo Creek Road (). In 2017, the school had an enrolment of 179 students with 16 teachers (11 full-time equivalent) and 13 non-teaching staff (6 full-time equivalent). In 2018, the school had an enrolment of 190 students with 16 teachers (11 full-time equivalent) and 12 non-teaching staff (6 full-time equivalent).
There is no secondary school in Miallo. The nearest government secondary school is Mossman State High School in neighbouring Mossman to the south.