Edward Harry Sniffin, 61, who retired in 1979 as manager of treasury operations for the Potomac Electric Power Company, died Sunday at Kimbrough Army Community Hospital at Fort Meade, Md.

A fourth-generation Washingtonian, Mr. Sniffin graduated from McKinley High School and earned an accounting degree from Benjamin Franklin University in 1939. He joined Pepco in that year. During World War II, he served as an Army lieutenant with the 80th Infantry Division in Europe.

After the war, he returned to Pepco, where he served as a senior administrative accountant and manager of the budget accounting department before being promoted to manager of treasury operations. He was an active of Pepco's 25-year club.

Mr. Sniffin, who lived in Silver Spring, was a member of the Planning Executive Institute and an emeritus life associate of the National Association of Accountants. He was a member of Christ Congregational Church in Silver Spring, where he had served as a trustee, financial secretary and on the board of stewardship. He was a former district commissioner of the Boy Scouts and a member of the Scottish Rite and the Silver Spring Masonic Lodge.

Survivors include his wife of 35 years, Sylvia E., of Silver Spring; three sons, Navy Lt. Cmdr. Edward McK., of Monterey, Calif., Richard B., of Takoma Park, and David A., of Silver Spring; his mother, Mildred E. Sniffin, and a sister, Margaret Chirielieson, both of Silver Spring, and three grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the organ fund of Christ Congregational Church in Silver Spring.