Pramatha Nath Roy (7 October 1944 - 31 May 2019), popularly known as P. N. Roy, was an Indian politician and was the Minister of State for Development & Planning in the Government of West Bengal. He was an MLA, elected from the Kaliaganj Assembly constituency in 1996, 2001, 2011 and 2016.
He resigned from the ministry when Congress withdrew its support to the Mamata Banerjee government in September 2012.
Pramatha Nath Roy was a postgraduate in humanities.
P. N. Roy died on 31 May 2019 at the end of 75 in Kolkata, causing his constituency to go vacant and have a bypoll, which was won by Tapan Deb Singha of All India Trinamool Congress.