Lt. Col. Raymond M. Peak, 77, a retired Army officer and veteran of three wars, died of a heart attack Thursday evening at Bethesda Naval Hospital.

Col. Peak, a native Washingtonian, lived in Chevy Chase, Md. at the time of his death. He attended St. John's College High School in Washington and graduated from the Georgetown University School of Foreign Service.

Col. Peak was an Army officer in World Wars I and II and the Korean War. He also served as an Army judge in Okinawa and Korea during the Korean War. Col. Peak was awarded the Bronze Star Medal and Merits of Achievement Awards before retiring from the Army in 1959 after 30 years of service.

Col. Peak was active in several organizations in the Washington area. He was a member of the Oldest Inhabitants of Washington, D.C. and an officer of Elks of Washington. He was a member and former Commander of American Legion Post 44 here and a member of United States Retired Officers Assocition of Washington.

Col. Peak previously served as the past president of the George State Retired Officers Assocation in Georgetown where he was once stationed as an Army officer.

He also participated in activities at the Church of the Annunciation in Washington and Little Flower Church in Bethesda. Col. Peak and his wife have both been active members of the Good Samaritan Society, an organization that serves the poor.

He is survived by his wife, Kathleen Connor Peak, his sister, Agatha Peak; three daughters, Ruth Wilson of Columbia, S.C., Frances O'Connor of Fletcher, N.C., and Dorothy George of Washington; 11 grandchildren and three grandchildren.

The family suggests that expressions of sympathy may be in the form of contributions to theGood Samaritan Society in Southeast Washington.