Sir William Percy Cowley, CBE, JP (26 July 1886 – 13 January 1958) was a Manx lawyer and judge.
During the First World War, he served as Royal Naval Volunteer Reserve as a Paymaster-Sub-Lieutenant and was on the staff of the Commander-in-Chief, Mediterranean Fleet from 1918 to 1919.
[1][2] He was High Bailiff of Ramsey and Peel from 1925 until 1931, the year he was appointed a justice of the peace.
[2] He was appointed CBE in 1945, knighted in 1952, and was made a freeman of Douglas in 1956.
A son was the barrister and judge Denis Martin Cowley QC.