Sir Ronald Hibbert Cross, 1st Baronet, KCMG, KCVO, PC (9 May 1896 – 3 June 1968) was a British politician and diplomat. Cross was educated at Ludgrove Preparatory School and then Eton College. He served with the Duke of Lancaster's Own Yeomanry and as a pilot with the Royal Flying Corps in World War I. At the 1931 general election, Cross was elected as Conservative Member of Parliament (MP) for Rossendale. He was sworn into the Privy Council in 1940. Mount Ronald Cross in western Tasmania is named after him.