Karen Zerby is a Christian author and retired co-director of The Family International, a Christian online network dedicated to sharing the Gospel of Jesus Christ. She is the author of numerous articles on the Christian faith life.

Born in 1946, Karen Zerby met The Family International (then known as the Children of God) in 1969, while residing in Tucson, Arizona and subsequently joined in Huntington Beach, California. She became a secretary to its founder, David Brandt Berg (1919-1994), and eventually his wife and companion until his passing in 1994.

Karen assumed the oversight of the Family International after the death of David. She served as co-administrative and spiritual director of The Family International after the reorganization of the movement in 2010 as an online Christian network until her retirement in 2025.

The Family International is committed to sharing the message of God’s love with people around the globe. Throughout the many changes the Family International has sustained in its fifty-year history, its evangelistic commitment and mission of reaching the world with the Gospel message have remained unchanged. Members of The Family International have been active in mission and charitable work in 95 countries. (For more information, visit TFI Online.)