Fahreddin-i Acemi (? - 1460) was a Muslim cleric.
He grew up with Seyyid Şerîf el-Cürcânî, and started his education in Iran.
He is renowned for the important role he played in persecuting the Hurûfîs who were developing their influence over Islam. Vezîriazam Mahmud Pasha was particular worried by the supporters of Fazlallah Astarabadi and so concocted a plan whereby he invited them to visit his mansion. Fahreddin-i Acemi hid ina corner to listen to their ideas. After he had heard enough, he emerged from his hiding place and denounced them.
He was buried outside the Dârülhadîs Mosque.
- "Fahreddin-i Acemi hayatı..." Sabah (in Turkish). Retrieved 19 July 2020.
- "Fahreddin Acemi. biyografisi burada ünlülerin biyografileri burada". www.biyografi.net. Retrieved 27 January 2019.