Donald Norris Merryfield, 75, a real estate agent in the Washington area for 25 years who also had worked as a salesman for a meat packing company, died of cancer Feb. 15 at the Sylvan Manor Nursing Home in Kensington.

Mr. Merryfield, a native of Winnebago, Ill., graduated from the University of Iowa. In 1930, he went to work for the Hormel Meat Packing Co. and in 1947 was transferred to Washington as its East Coast sales representative.

In 1950 he left Hormel and opened the real estate company of Merryfield and Woods in Chevy Chase. He joined the Washington real estate firm of Legum and Gerber as a salesman in 1957 and worked there until 1982.

Mr. Merryfield was a member of the Washington and Montgomery County boards of realtors. He was a past president of the Chevy Chase Citizens Association and a member of the Knights of Columbus and the Blessed Sacrament Catholic Church in Washington.

His wife, the former Rosemarie Russell, died in 1963.

Survivors include his son, Dr. Donald Russell Merryfield, of Annapolis; three daughters, Marsha Flanagan of Rancho Santa Fe, Calif., Jean Fitzgerald of Potomac, and Lynne Frances Merryfield of Washington; a sister, Nina Opel of Excelsior, Minn.; and seven grandchildren.