William Whiteley and Sons Limited were textile engineers and machinists based at Prospect Iron Works in Lockwood, Huddersfield. Founded by William Whiteley (1850-1901), in c. 1870.

The company's letterhead from 1916 described them as: "Makers of all descriptions of cloth tentering and drying machines, wool and cotton drying machines, self acting mules, winding, warping, sizing and beaming machines and all other kinds of woollen machines."

It was a private company in 1932.