Petre Paul Negulescu (October 18, 1870 – September 28, 1951) was a Romanian philosopher and conservative politician, known as a disciple and continuator of Titu Maiorescu. Affiliated with Maiorescu's Junimea society from his early twenties, he debuted as a positivist and monist, attempting to reconcile art for art's sake with an evolutionist philosophy of culture. He was a lecturer and tenured professor at the University of Iași, where he promoted the Junimist lobby against left-wing competitors, and formalized his links with the Conservative Party in 1901. From 1910, he taught at the University of Bucharest, publishing works on Renaissance philosophy and other historical retrospectives.
After World War I, Negulescu was an affiliate (later president) of the radical-conservative People's Party, and an advocate of labor and education reform. Serving several terms in Parliament, he was twice the Public Education Minister in the 1920s, but failed to enact his project for vocational-centered schooling.
By 1934, as an adversary of the nationalist far-right, he wrote tracts rejecting biological determinism of all sorts, and scientific racism in particular. Pushed in the minority by supporters of statism, Negulescu supported meritocracy within the framework of classical liberalism. He was sidelined by right-wing totalitarian regimes after 1940, and ultimately banned, shortly before his death, by the communist regime.