Paul Dobin, 60, a lawyer and the managing partner of the Washington law firm of Cohn and Marks, died Wednesday at Sibley Memorial Hospital after a heart attack.

Mr. Dobin, a media and communications expert, joined Cohn and Marks in 1952.

From 1946 to 1952, he had worked for the Federal Communications Commission and served as legal assistant to FCC member Robert Jones for 2 1/2 years. He later served as chief of the rules and standards division of the FCC broadcast bureau, where he was the architect of the FCC's "plan of 1952." This assigned the UHF and VHF television channels to cities throughout the United States, upon which the television industry in this country is based.

During World War II, he served as a lawyer in the judge advocate's office at the Aberdeen Proving Ground in Maryland.

Mr. Dobin, the grandson of a rabbi, had long been involved in national and local Jewish affairs and in the Reform Jewish movement.

He was a past president of Temple Sinai in Washington and recently had been named chairman of the board of trustees of the College of Jewish Studies in Silver Spring. He was on the executive committees of the Jewish Community Council of Greater Washington and the Washington chapter of the American Jewish Committee.

He also had been an executive committee member of the Board of Jewish Education of Greater Washington, and a member of the national board and executive board of the mid-Atlantic council of the Union of American Hebrew Congregations.

Mr. Dobin was born in New York City. He earned a bachelor's degree in government from the City College of New York in 1938, and was elected to Phi Beta Kappa. He earned a law degree drom Harvard University Law School in 1941, and had been noted editor of the Harvard Law Review.

He had been a committee member of the science and technology section of the American Bar Association and had served on the executive committee of the Federal Communications Bar Association from 1970 to 1972.

Survivors include his wife, Edith, of the home in Somerset; a son, Kenneth of Silver Spring; a daughter, Phyllis Maurer of Hyattsville; a brother, Jerome of Venice, Calif., and one grandchild.

The family suggests that expressions of sympathy be in the form of contributions to the American Diabetes Association, 7961 Eastern Ave., Silver Spring, 20910.