Ilandiraiyan (3rd/ 4th century AD) was a Tamil chieftain who ruled over Kanchipuram during the Sangam period. According to P. T. Srinivasa Iyengar, Ilandiraiyan belonged to the Pallava Dynasty and was a contemporary of the Early Chola king Karikala.
According to P. T. Srinivasa Iyengar, Ilandiraiyan ascended the throne of Kanchi during the reign of the Chola king Karikal and was probably, a feudatory of the latter. Ilandiraiyan is believed to have been a weak, minor chieftain who had little power and waged no battles.
Uruttiragannanar who wrote the Paṭṭiṉappālai, gives a vivid description of Ilandiraiyan's kingdom and capital city of Kanchi in his poem Perumpāṇāṟṟuppaṭai. He advices "poets seeking rewards" to go to the court of Tondaiman Ilandiraiyan.
Ilandiraiyan, himself, is believed to have made some poetical compositions. Ode 185 of the Puṟanāṉūṟu is attributed to Tondaiman Ilandiraiyan.
- P. T. Srinivasa Iyengar (1929). History of the Tamils from the Earliest Times to 600 A. D. pp. 388–405.