Sir Harold Derbyshire MC QC (25 December 1886 – 14 September 1972) was an English barrister, judge and Liberal Party politician.

He was educated at Queen Elizabeth's Grammar School, Blackburn, and then on a scholarship at Sidney Sussex College, Cambridge, where he studied Natural Sciences.

[1] Derbyshire was admitted to Gray's Inn, where he was called to the Bar in 1911.

Derbyshire served with distinction during World War I in the Royal Artillery in France and Belgium, and was awarded the MC in the 1918 Birthday Honours.

In the 1923 General Election he contested the seat of Clitheroe and in the 1929 General Election that of Royton, standing for the Liberal Party, but was unsuccessful on both occasions.