Security Paper Mill (SPM) is a unit of Security Printing and Minting Corporation of India Limited (SPMCIL), a Miniratna Category-I Central Public Sector Enterprise under the Ministry of Finance, Government of India. Established in 1968, SPM is engaged in the manufacturing of high-quality security paper used for banknotes, passports, visas, stamps, and other secure documents, contributing significantly to India's security printing infrastructure.