Marta Estela DuBois (December 15, 1952 in David, Chiriquí, Panama - May 8, 2018 in Los Angeles, California, USA) was a Panamanian actress. DuBois had a steady career on episodes of numerous television series and films. She may be best known as the female lead, as homicide detective Roberta Hansen, in the McBride franchise of 10 television films.
DuBois co-started in the single season of the television series Tales of the Gold Monkey, which ran from September 1982 through June 1983. DuBois had a recurring role on Magnum, P.I. and made guest appearances on such series as Hardcastle and McCormick, The A-Team, L.A. Law, Silk Stalkings, and Matlock.
She made her film debut with a supporting role in the 1979 drama Boulevard Nights. She followed this with roles in the films Dead Badge (1995), and Black Out (1996). DuBois played actress Rita Gam, close friend and bridesmaid of the future Princess Grace of Monaco, in the 1983 television film Grace Kelly, and appeared in the television movie The Trial of the Incredible Hulk (1989).