Frederick Cawley, 1st Baron Cawley PC, JP, known as Sir Frederick Cawley, Bt, between 1906 and 1918, was a British businessman and Liberal Party politician. A wealthy cotton merchant, he represented Prestwich in parliament between 1895 and 1918 and served as Chancellor of the Duchy of Lancaster between 1916 and 1918. Created a baronet in 1906, he was ennobled as Baron Cawley in 1918.

Prestwich was a constituency in the county of Lancashire of the House of Commons for the Parliament of the United Kingdom. Created by the Redistribution of Seats Act 1885, it was represented by one Member of Parliament. The constituency was abolished in 1918.