Kay Warren is an evangelical leader, author, AIDS activist, and co-founder of Saddleback Church in Southern California. Along with her husband, Rick, Warren founded Saddleback in 1980 with just a single family to fill the pews. Today it has 120-acre campus, 22,000 weekly attendees, and has provided spiritual guidance and source material to over 400,000 ministers worldwide.

In 2002, Warren became "seriously disturbed" by the scope of the AIDS epidemic; she has since set up an AIDS ministry at Saddleback and spoken out about the disease around the world. Warren is the co-founder and co-director (with her husband) of The Global PEACE Fund, which fights poverty, disease, and illiteracy.

Warren has spoken to the United Nations Global Coalition on Women and AIDS. In 2006, Warren was among eight women honored for their humanitarian efforts at the CNN Inspire Summit. Warren is the author of Foundations Participant's Guide and Dangerous Surrender: What Happens When You Say Yes to God.