Alladi (Telugu: అల్లాడి) is one of the Indian surnames.
Alladi Krishnaswamy Iyer was an Indian lawyer and member of the Constituent Assembly of India.
Alladi Kuppu Swamy was an Indian lawyer of Chief Justice of Andhra Pradesh High Court.
Alladi Ramakrishnan was an Indian physicist and the founder of the Institute of Mathematical Sciences.
Sudhir Alladi Venkatesh is an Indian sociologist and urban ethnographer.