List of Famous people born in Portsmouth, United Kingdom

Phoebe Sarah Hertha Ayrton was a British engineer, mathematician, physicist and inventor, and suffragette. Known in adult life as Hertha Ayrton, born Phoebe Sarah Marks, she was awarded the Hughes Medal by the Royal Society for her work on electric arcs and ripple marks in sand and water.

Field Marshal Sir Richard Amyatt Hull, was a senior British Army officer. He was the last Chief of the Imperial General Staff (1961–64) and the first Chief of the General Staff (1964–65), and, as such, the professional head of the British Army. He later became Chief of the Defence Staff (1965–67), the professional head of the entire British Armed Forces. He served with distinction during the Second World War, fighting from 1942 to 1945 in North Africa, Italy and Western Europe, became the youngest divisional commander in the British Army, and later advised the British government on the response to the Indonesia–Malaysia confrontation.

Reginald Woodifield Appleby was an English lawyer, practising in Bermuda, who in 1898 founded the predecessor of the law firm that now trades as Appleby. He served as a major in the Bermuda Volunteer Rifle Corps during the First World War, and was a member of the Legislative Council of Bermuda.