USS Ticonderoga (DDG/CG-47), nicknamed "Tico", was a guided-missile cruiser built for the United States Navy. She was the lead ship of the Ticonderoga class and the first U.S. Navy combatant to incorporate the Aegis combat system. Originally ordered as a guided-missile destroyer, she was redesignated as a cruiser after capabilities from the cancelled Strike cruiser program were implemented into the ship's design. The new AEGIS system allowed Ticonderoga to track and engage many aerial targets more effectively than any previous U.S. Navy warship.

The Ticonderoga class of guided-missile cruisers is a class of warships of the United States Navy, first ordered and authorized in the 1978 fiscal year. It was originally planned as a class of destroyers. However, the increased combat capability offered by the Aegis Combat System and the passive phased array AN/SPY-1 radar, together with the capability of operating as a flagship, were used to justify the change of the classification from DDG to CG shortly before the keels were laid down for Ticonderoga and Yorktown.