Clive Calver (born 1949) is a British Evangelical Christian leader, teacher, author and international speaker. During the early 1970s, he founded and led the groundbreaking mission team "In the Name of Jesus" (ITNOJ), which included Graham Kendrick, , , and among its members. He also went on to lead British Youth for Christ, and was heavily involved in the Spring Harvest series of Christian Conferences. He has also appeared on ABC's Nightline, CNN, and National Public Radio. He has authored twenty books and has been published in many national and local print media.