Sir Ronald Hibbert Cross, 1st Baronet, KCMG, KCVO (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 for Rossendale. He was sworn into the Privy Council in 1940.

Cross held a number of ministerial posts including Minister of Shipping and Minister of Economic Warfare during World War II. In 1941 he was sent to be High Commissioner in Australia. Cross returned to the United Kingdom in 1945 but lost his seat at that year's election.

In 1950, Cross was elected in the seat of Ormskirk, Lancashire.He later served as Governor of Tasmania from 23 August 1951 to 4 June 1958. He was appointed KCVO by Queen Elizabeth II when she visited Hobart during her Coronation Tour in 1954. He was later appointed KCMG. He was a popular Governor, well regarded in the island State.

Mount Ronald Cross in western Tasmania is named after him.