Reginald Cox

Sir Reginald Henry Cox, 1st Baronet, (30 December 1865 – 27 March 1922) was an English banker.

Cox was born in Westminster, the second son of Frederick Cox, of Hillingdon House and Mabel Eden. He was educated at Eton. He was a Senior Partner at Cox & Co. and an agent for the British Army. He was created a baronet of Old Windsor in the County of Berkshire in the 1921 New Year's Honours.

He lived in Old Windsor, Berkshire, and was appointed a deputy lieutenant and selected High Sheriff of Berkshire for 1919–20.

In 1890, he married Sybil Weguelin, daughter of MP Thomas Matthias Weguelin. He died at the age of 56 without surviving children, and the baronetcy thus became extinct after only just over a year.