Frederick William Colcleugh (1845[1] – 1907[2]) was a merchant and political figure in Manitoba.

He represented St. Andrews from 1888 to 1896 in the Legislative Assembly of Manitoba as a Liberal.

He was born in West Flamborough, Wentworth County, Canada West, the son of Walter Colcleugh, a native of Scotland,[1] and Sarah Kirkpatrick, and was educated in Dundas and Picton.

He established a business in Carlisle which he sold in 1874, moving to Manitoba.

Colcleugh ran unsuccessfully for a seat in the Manitoba assembly in 1886 before being elected in 1888.