Operation Star or Operation Zvezda (Russian: Звезда, lit. 'Star') was a Red Army offensive on the Eastern Front of World War II begun on 2 February 1943. The attack was the responsibility of the Voronezh Front under the command of Filipp Golikov and a part of the larger Voronezh-Kharkov Strategic Offensive Operation.

Its main objectives were the cities of Kharkov and Kursk. While initially successful in capturing both cities, the Soviets overextended themselves, allowing Field Marshal Erich von Manstein to launch a counteroffensive and inflict a defeat on the Soviets in the Third Battle of Kharkov.