The A333 is a road in Surrey, south-east England. It runs between the Hazel Grove interchange () and the Hindhead crossroads (). It was formerly a small section of the A3 and was re-numbered in 2011 as part of the Hindhead Tunnel project.
This number was previously allocated to a route in Hampshire, running from Winchester to Cosham via Wickham,[1] which was downgraded in stages between 1983 and 1994 and renamed B2177 and B3335 once the M3 and M27 motorways were finished.[2]