Martin E. Dietz, 83, a retired Treasury Department official and former newspaperman, died Saturday at his home in Bethesda after a heart attack.

Mr. Dietz came to Washington in 1942 to work as a public relations employe of the old Morris Plan Bankers Association, which later became the Consumer Bankers Association.

He was loaned to the Treasury Department a year later to help direct publicity for war bond drives in the District of Columbia He joined Treasury's savings bond staff in 1948 where he worked until retiring in 1966 as a regional promotion director.

Mr. Dietz was presented with the Albert Gallatin Award for meritorious service from the Treasury Department in 1966.

He was a member of the National Press club and was a co-founder of its annual art show for members.

Mr. Dietz was a native of Auburn, N.Y., and studied painting at the Art Students League and the Pratt Institute in New York City.

He began a career in journalism with the Auburn, N.Y., Citizen in the early 1920s. He later worked as reporter and editor of The Brooklyn Eagle, and was on the staff of the Literary Digest in the mid-1930s. He also worked for the New York Post.

Mr. Dietz also was active in the successful re-election campaign of the late Sen. Robert F. Wagner (D-N.Y.) in 1938.

His wife, Margaret Elizabeth Dietz, died in 1972.

Mr. Dietz is survived by a daughter, Deborah Gaynor Dietz of Amissville, Va.