Arthur Prince Chattock, FRS (14 August 1860 – 1 July 1934) was a British physicist.

After a short time as an electrical engineer for Siemens he returned to University College, London to study under George Carey Foster.

In 1885 he succeeded Silvanus P. Thompson at University College, Bristol as demonstrator in Physics.

Chattock spent two years (1887-9) in Liverpool with Oliver Lodge where in February 1888 he worked on key experiments towards the understanding of radio waves.

But Tyndall invited Chattock back after the war in 1919 where he carried out definitive experiments on the gyromagnetic ratio of iron.