Duke Tai of Tian Qi (Chinese: 田齊太公; pinyin: Tián Qí Tài Gōng; died 384 BC) was from 386 to 384 BC ruler of the State of Qi, a major power during the Warring States period of ancient China. He was the first Qi ruler from the House of Tian, replacing the House of Jiang that had ruled the state for over six centuries.