Richard Troth Willis, 63, a businessman and well-known tennis player and golfer, died Sunday at George Washington University Hospital of complications following an accidental fall on the ice on January 19.

He was a partner in the family real estate investment firm of E. M. Willis and Sons.

Born in Washington, Mr. Willis graduated in 1935 from the University of North Carolina, where he was captain of the tennis team. He was considered an outstanding tennis player in the Middle-Atlantic region and won the tennis championship of the Columbia Country Club here five times.

He also became one of the leading golfers at Columbia and was associated with the Masters Golf Tournament at Augusta, Ga. For many years he was the official escort for noted golfer Fred McLeod, during major tournaments.

After graduating from college, Mr. Willis served for a number of years as a special agent with the Federal Bureau of Investigation. During World War II, he was a Marine Corps captain in the Pacific.

He is survived by his wife, Sunny Willis, of the home in Chevy Chase; a daughter, Mrs. Brendan O'Neill, of Potomac; a sister, Mary Kathryn, of Washington; two brothers, Jack and Hillman Willis, of Chevy Chase, and three grandchildren.