'Priceless' was the Allied overall designation of plans for the invasion of the Italian mainland after the 'Husky' (i) capture of Sicily (spring/summer 1943).

The term was used in high command planning for the strategic objectives of General Dwight D. Eisenhower, the Commander-in-Chief Allied Forces in North Africa, working through General the Hon. Sir Harold Alexander’s Allied 15^th Army Group. The raw concept was developed in 'Avalanche' and 'Baytown' (i), which were undertaken respectively by Lieutenant General Mark W. Clark’s US 5^th Army and General Sir Bernard Montgomery’s British 8^th Army.