An elder. He was the teacher of Cūḷa-Kokālika and, having become a Non-returner, was born as a Pacceka Brahma in the Brahma-world.

When Kokālika was grievously ill, Tudu visited him and exhorted him to put his trust in Sāriputta and Mahā-Moggallāna. However, Kokālika refused to accept his advice and drove him away. S.i.149; A.v.171; J.iv.245; AA.ii.852; SA.i.167 f; SNA.ii.476.