Poonthottam Achhan Nambudiri (also known as Poonthottam Parameshwaran Nambudiri) was a 19th-century poet of the Venmani School of Malayalam Literature.
Nambudiri was born in 1821 in Killikkurussimangalam, Palakkad district. He was a close friend and associate of Venmani Achhan Nambudiripad from Kodungalloor.
Nambudiri was a talented poet whose works include Ambareesha Charitham (Ottan Thullal), Kaalakeya Vadham (Seethankan Thullal), Syamanthakam (Aattakkathha) and a few Muktakams. His son Damodaran Nambudiri was also a gifted poet and was known as Poonthottam Mahan Nambudiri.