三大戰役（中國大陸叫做三大戰役，臺灣叫做三大會戰）即係喺1948年9月去到1949年1月嘅時候，中國人民解放軍同埋中華民國國軍喺第二次國共內戰入面嘅三次關鍵戰役。其中嗰三場仗分別係話遼瀋戰役、淮海戰役同平津戰役，最終全部都係解放軍贏哂。
The Three Great Battles (called the Three Great Battles in Chinese mainland and the Three Great Battles in Taiwan) were the three key battles fought by the Chinese People's Liberation Army and the Republic of China National Army in the Second Kuomintang-Communist Civil War between September 1948 and January 1949. The three battles were the Liaoying Campaign, the Huaihai Campaign, and the Pingjin Campaign, all of which were ultimately won by the PLA.