Dr. Joseph C. Gidynski, 74, former chief of the North and East European Branch of the Voice of America, died Feb. 3 at his home in Washington.

He retired from VOA in 1972 after more than 20 years with the organization. Much of that time as head of VOA's Polish Service, he was a broadcast commentator known as listeners in Poland as "Kazimierz Wegrzecki."

Since retiring from VOA, Mr. Gidynski had practiced law in Washington, specializing in Polish law that might involve American citizens.

Born in Poland near Czestochowa, he held a doctor of law degree from the University of Poznan Law School and studied at the Sorbonne on a French government scholarship.

He was a city court judge in Poznan, where he practiced law, before coming to this country in 1939. He earned a doctor of laws degree from Columbia University Law School and was a member of the New York and D.C. Bars.

Dr. Gidynski joined the VOA in New York and came here when its offices were moved here in 1954.

He was the author of articles appearing in Kultura, a Polish language monthly published in Paris, and the Polish Review. He was a member of the Polish Institute of Arts and Sciences.

He is survived by his wife, Dr. Janina Gidynski, and a daughter, Christina B. Gidynski, of New York City, and a son, Andrew J., of Sterling Heights, Mich.