Dominic Monaghan net worth: Dominic Monaghan is an English actor who has a net worth of $12 million. Dominic Monaghan built his net worth acting in movies including The Lord of the Rings triology, and the TV show Lost. He was born in Berlin, Germany on December 8, 1976. His family moved to England when he was 11. Dominic got his fist taste of acting after appearing in many school plays like Oliver Twist, A Christmas Carol, and Bugsy Malone.