The Masood Jhandir Research Library (مسعود جھنڈیر ریسرچ لایبریری) is the largest private library of Pakistan situated at a small village Sardar Pur Jhandir in the Mailsi Tehsil, Vehari District. It was established in 1899 by a great scholar and poet, Malik Ghulam Muhammad (1865–1936).