Purahanda Kaluwara (Death on a Full Moon Day) (Sinhala: පුරහඳ කළුවර) is a 2001 Sri Lankan Sinhala drama film directed and produced by Prasanna Vithanage. It stars Joe Abeywickrama and Priyanka Samaraweera in lead roles along with Linton Semage and Mahendra Perera. Music composed by Nadeeka Guruge. The film has received mainly positive reviews. It is the 967th film in Sri Lankan cinema.

Udaya Prasanna Vithanage is widely regarded as one of the most talented and influential filmmakers in South Asia. He is known for thought-provoking films that often deals with social, political and cultural issues. His films have received numerous awards accolades, both locally and internationally and have been praised for their innovative storytelling.