Nimattullah Kassab, also known as Al-Hardini, was a 19th-century Lebanese Maronite monk, priest, and scholar. Born Youssef Kassab in 1808, he entered the Lebanese Maronite Order in 1828, receiving the monastic name Nimatullah. He served the church through teaching, administration, and monastic leadership, notably directing seminarians, including the future saint Charbel Makhlouf. Recognized for his deep spirituality and devotion, he lived a life of prayer and service until his death in Kfifane in 1858. He is venerated as a saint in the Catholic Church.