Keighley (pronounced Keith-ley) is a town in the county of West Yorkshire, England, north of Bradford, on the meeting point of the River Aire and the River Worth.

It was a wool and cotton town which grew from a population of less than 6000 in 1800 to one of more than 60,000 in 1850.

On the outskirts there is Cliffe Hall, also known as Cliffe Castle and now Keighley Museum. Keighley is also the home base of the Keighley and Worth Valley Railway, a heritage railway that passes through Haworth (home of Anne, Charlotte and Emily Bronte) and terminates at Oxenhope. The Vintage Railway Carriage Museum is on site.

East Riddlesden Hall is close to Keighley.

Bill Bryson in his book Notes from a Small Island jokingly asked why it was that the British army uses beautiful countryside for munition target practice, rather than a place like Keighley.