Rainbow is a town in the Shire of Hindmarsh in northwest Victoria, Australia, 400 kilometres (250 mi) from Melbourne.

A post office opened on 2 July 1900[2] and town blocks in Rainbow were sold in October 1900.

The town was the subject of an episode of the ABC television program Enough Rope, with Andrew Denton, on 31 July 2006.

When the Melbourne to Adelaide main line was changed to standard gauge, the Rainbow branchline was also re-gauged.

To its north are Lake Albacutya, which is usually dry but a Ramsar-listed bird habitat; and Wyperfeld National Park.

Established in January 2015 from the former primary and secondary schools, it serves students from nearby farms and towns, from Years foundation (prep) to 12 (VCE).

The former Rainbow Primary School for younger students was co-located to the site of the secondary college in 2011, in a new $3.5 million building.