Martin L. Friedman, 58, a Washington lawyer active in Democratic Party affairs, died Wednesday at George Washington University Hospital after suffering a stroke.

From 1950 until 1953, he was a special assistant to President Truman, serving with Donald Dawson who was an aide to the President.

Mr. Friedman was one of the founders of the National Democratic Club in Washington and was its president from 1968 to 1970.

He also was counsel to the Democratic National Committee in 1961-62, and had been active in the presidential campaigns of Kennedy and Johnson and the 1968 campaign of Sen. Hubert Humphrey.

[TEXT OMITTED FROM SOURCE] up in Jersey City, N.J. He graduated magna cum laude in 1939 from Rutgers University, where he was elected to Phi Beta Kappa. He received a law degree in 1949 from George Washington University, where he was elected to the Order of the Coif.

In between, Mr. Friedman worked with the Labor and War departments and was an officer with the Air Transport Command during World War II.

He became a partner in the firm of Chapman, DiSalle and Friedman in 1956. In 1970, he established his own practice and was Washington legal consultant for the Phillips Petroleum Co.

Mr. Friedman was a member of the American and the Federal Bar associations, the National Lawyers Club and the City Tavern Association.

He is survived by his wife, Antoinette Black Farrior Friedman of the home in Washington; a brother, Meyer Friedman and a sister, Mollie F. Neuman, both of Jersey City.

The family suggests that expressions of sympathy be in the form of contributions to the Washington unit of the Heart Association.