Together with her husband Mark Burnett, they produced the series The Bible for the History Channel, which was hugely popular in the United States and received three Emmy Award nominations.
It has since been adapted for release as a feature film.
They regularly feature at the top of the annual Sunday Times Rich List, and this year were ranked second in Northern Ireland with a value of £375m.
Their resumé also includes television shows such as The Apprentice, The Voice and Survivor.
Speaking previously Hollywood Chamber president and CEO Leron Gubler said: "We are thrilled to honour Roma Downey.
"She has been a force in the business of entertainment, both as an actress and talented producer."
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