Colomiers is a commune in the Haute-Garonne department in southwestern France.
It is the largest suburb of the city of Toulouse, and is adjacent to it on the west side. It is a member of the Urban community of Greater Toulouse.
In 1971 it became the first area of France to offer zero-fare public transport, which is still in operation at present.
There is an international school in Colomiers (International School of Toulouse or IST) which is run by Airbus and which prepares for the International Baccalaureate, and a Lycée International including a German school (Deutsche Schule Toulouse, DST).
US Colomiers is a French rugby union club based in Colomiers.