Svend Yort, 72, a retired telephone engineer for the Chesapeake & Potomac Telephone Co. here an an authority on Scandanavian and classic stamps of the world, died Friday at his home in Chevy Chase of complications of diabetes.

Mr. Yort, who joined C&P in 1934, was in charge of the company's power engineering systems when he retired in 1972.

A native of Copenhagen, he moved to this area with his parents as a child. He graduated from Staunton Military Academy in Virginia and earned a bachelor's degree in chemical engineering from Lafayette College in 1931.

Mr. Yort was active in international stamp societies in this country and overseas for 50 years. He was chairman of the International Philatelic Exhibition here in 1966 and a member of juries at international exhibitions in New York, Philadelphia and Belgium. He also officiated at numerous national exhibitions.

He was a Fellow of the Royal Philatelic Society in London and a life member of the Washington Philatelic Society and the Collectors Club of Washington.

Survivors include his wife, Emer of Cheve Chase; two daughters, Una M. Vore of Columbia, Md., and Ann M. Kuhns of Woodmoor, Md., and five grandchildren.

The family suggests that expressions of sympathy be in the for of contributions to the Washington area chapter of the American Diabetes Association or the Needy Sick Fund at the Washington Hospital Center.