Diana Castro Hagee is the wife of Dr. John Hagee, founder and senior pastor of Cornerstone Church in San Antonio, Texas. She is chief of staff for John Hagee Ministries television ministry, as well as special events coordinator and leader of Women's Ministries at Cornerstone Church.

Diana is the author of the best-selling book The King's Daughter and The King’s Daughter Workbook , Not by Bread Alone, a cookbook encouraging creative ministry through food as well as a book she co-authored with her husband entitled, What Every Man Wants in a Woman—What Every Woman Wants in a Man. Her most recent release is Ruth, the Romance of Redemption – A Love Story.

She is founder and director of the King’s Daughter, Becoming a Woman of God National Conferences. She was presented the prestigious Lion of Judah award by the Jewish Federation of Greater Houston for the long-standing work she and Pastor Hagee do within Israel. Diana currently works with on Christians United for Israel, which was founded by her husband in 2006.

Diana holds a Bachelor’s Degree in Biology from Trinity University in San Antonio, Texas. She and Pastor John Hagee have five children and eight grandchildren.