Philip Herbert Cowell FRS (7 August 1870, Calcutta – 6 June 1949) was a British astronomer.Philip Herbert Cowell was born in Calcutta, India and educated at Eton and Trinity College, Cambridge.
He became second chief assistant at the Royal Greenwich Observatory in 1896 and later became the Superintendent of HM Nautical Almanac Office during 1910–1930.
He worked on celestial mechanics, and orbits of comets and minor planets in particular.
He also carefully studied the discrepancy that then existed between the theory and observation of the position of the Moon.
He was elected a Fellow of the Royal Society on 3 May 1906.