Philip Cosgrave (died 22 October 1923) was an Irish Cumann na nGaedheal politician who served as a Teachta Dála (TD) in Dáil Éireann from 1921 to 1923.
He was first elected in the 1921 general election for Dublin North-West, and after that constituency's abolition for the 1923 general election he was re-elected for the new Dublin South constituency. Cosgrave's death only eight weeks after winning his seat in the 4th Dáil triggered a by-election for his seat. It was held on 12 March 1924 and won by the Cumann na nGaedheal candidate, James O'Mara.
His brother, W. T. Cosgrave, was President of the Executive Council of the Irish Free State and his nephew, Liam Cosgrave was Taoiseach from 1973 to 1977.