Heidi Gayle Baker[1] (born August 29, 1959) is a Christian missionary, itinerant speaker, and the CEO of Iris Global, a Christian humanitarian organization.

[1] She grew up in Southern California, becoming a Christian after hearing a Navajo preacher's message while volunteering on a Choctaw reservation.

[2] In 1980 the Bakers founded Iris Global,[5] a non-profit Christian ministry dedicated to charitable service and evangelism, particularly in developing nations.

[6] In 1995 the Bakers moved to Mozambique in order to begin a new ministry focused on the care of orphaned and abandoned children.

[3] Candy Gunther Brown, professor of religious studies at Indiana University, has called the Bakers "among the most influential leaders in world Pentecostalism.