Tommy Barnett is an author, the co-pastor of Dream City Church, an Assemblies of God megachurch in Phoenix, Arizona , and chancellor of Southeastern University. Dream City Church has branded itself as "the church with a heart", reporting over 275 active outreach ministries.

Tommy Barnett began his ministry at age sixteen. Before moving to Phoenix, Barnett pastored Westside Assembly of God in Davenport, Iowa. In just a few years, the church grew from 76 people to more than 4,000 members. In 1979, he became the pastor of Dream City Church. The church has grown under his leadership over the past three decades. As of 2011, it was the second largest Assembly of God church in the U.S. with an average Sunday attendance of 10,000. In 2011, Barnett turned over the senior pastor's post to his younger son, Luke; he remains as co-pastor.

Barnett and his son Matthew co-pastor the Los Angeles Dream Center, an Assemblies of God mission in the Echo Park neighborhood of Los Angeles, California. Matthew is also pastor of nearby Angelus Temple.

Barnett is on the Board of Directors of Joyce Meyer Ministries and has authored several books, including Multiplication, Hidden Powe , Enlarge Your Circle of Love, Reaching Your Dreams, The Power of a Half Hou , and Your Great Adventure.

He is married to his wife Marja and lives in Phoenix, Arizona. He has three children: Matthew, Luke, and Kristie, all of whom have also taken prominent leadership roles in the Assembly of God church.