Gregory Abbey was born in Great Falls, Montana but spent his youth moving around the country as part of an Air Force Family. He went to high school in Nebraska and Montana and junior high in Missouri. Along the way he also made stops in Rhode Island, California and North Dakota.

After studying acting at Rutgers Mason Gross School of the Arts with Bill Esper, Maggie Flanigan and Vicki Hart, Gregory moved to New York City where he has worked consistently for the last 20 years. In addition to having done hundreds of national commercials and voiceovers, he has also been seen in episodes of Bull, The Marvelous Mrs. Maisel, Jessica Jones, Chicago Med, Elementary, The Good Wife, Blue Bloods, Person of Interest, The Americans and Boardwalk Empire.