Harold A. Kertz, 71, a Washington attorney and former member of the D.C. Public Utilities Commission, died Saturday at Sibley Memorial Hospital following a stroke.

Mr. Kertz, who was born in Allentown, Pa., had practiced law in Washington since 1929. He graduated from Georgetown University and then Georgetown University Law School in 1928. He received his master's degree in law from Columbus University Law School in 1932.

After having worked for a number of Washington law firms, Mr. Kertz opened his own practice specializing in tax and estate law in 1957. In 1958, President Dwight D. Eisenhower appointed him a member of the D.C. Public Utilities Commission, where he served until 1962.

Mr. Kertz was a former professor of wills and administration of estates at Georgetown University Law Center. He was also a contributing editor to the magazine, "Trust and Estates." He continued to be active in his law practice until four weeks ago when he suffered the stroke.

He was a member of the University Club of Washington, the Capitol Hill Club, the National Press Club, the Early Bird's Breakfast Club, the Kiwanis Club and the Congressional Country Club among others.

Survivors include his wife, Genevieve H. of the home in Washignton; and a son, Robert Allan, of Bethesda.