Padmanabhan Balachandran Nair was an Indian writer, playwright, scenarist, director, and actor. He was known for his work in Malayalam literature and Malayalam cinema.

Sasthamkotta or Sasthamcotta is a village in the Kunnathoor Tehsil of Kollam district in the state of Kerala, India. Kunnathoor taluk headquarters is located at Sasthamkotta. The Sasthamkotta freshwater lake is the largest freshwater lake in Kerala.