Martin Posner, 59, owner of a public relations firm in Richmond, Va. and a former resident of the Washington area, died Thursday of a heart attack in his office.

The firm, which he established in 1972, promoted shows, such as the home and auto shows, in Richmond and the Washington area as well as handling other public relations matters.

Mr. Posner was born in Staten Island, N.Y. He enlisted in the Army infantry in World War II and served in North Africa, Italy and France. i

He came to the Washington area after the war and attended George Washington University while producing a radio show, known as the Jewish Family Hour. During the Korean conflict, he enlisted in the Air Force and saw duty in Korea.

Mr. Posner returned here to work for the Ted Shane Advertising Agency in the early 1950s. He then worked in advertising for WEAM radio and the Northern Virginia Sun before moving to Richmond in 1963. He was with radio station WANT there before establishing his own firm.

He is survived by his wife, the former Alice Steele, a son, David Andrew, and two daughters, Julie Marie and Jeanette Fay, all of Richmond, and a brother, Joseph, of Marina Del Rey, Calif.