Fenggan (simplified Chinese: 丰干; traditional Chinese: 豐干; pinyin: Fēnggān; Wade–Giles: Fengkan; lit. 'Big Stick', Japanese Bukan, fl. 9th century) was a Chinese Zen monk-poet lived in the Tang Dynasty, associated with Hanshan and Shide in the famed "Tiantai Trio" (天台三聖).