Manavala Reuben is an Indian Christian leader who worked as a pharmacist at Christian Medical College and Hospital, Vellore, Tamil Nadu, South India, from 1974 to 1984 and served as a mission worker in Northern India from 1984 to 1997 for the mission organization called Navjeevan Seva Mandal, a sister concern of Friends Missionary Prayer Band. Reuben moved to Singapore to do theological studies at Discipleship Training Centre from 1997 to 1999, and from 2000 to 2001 at Theological College for Asia, obtaining an MA in Intercultural Studies. Since 2002, Reuben has been serving among grassroots international workers as a ministry staff worker.