Steve Horvath, a local dealer of imported cars, has been elected chairman of the American International Automobile Dealers Association.

Horvath, whose automotive career began in a repair garage in 1946, now owns four area car dealerships and is the recipient of two national awards for exceptional sales and community service. Most recently, Horvath was one of 21 dealers nationwide to be chosen as finalists for Time magazine's Quality Dealer Awards. He also received Sports Illustrated's Imported Car Dealer Distinction Award in 1981.

Horvath is president of Tysons Toyota Inc. in Vienna; Calvert Toyota Inc. in Arlington; Winchester Toyota & Mercedes Benz Inc. in Winchester, and Manassas Dodge in Manassas.

A former chairman of the local chapter of the Automotive Trade Association, Horvath is on the board of directors of the Virginia Automobile Dealers Association. He joined AIADA in the early '70s and has been a board member since 1980. PROFESSIONAL

Saul B. Klaman, resident of the National Council of Savings Institutions, has announced his retirement effective July 1. Klaman has worked in the thrift industry since 1958, when he joined the former National Association of Mutual Savings Banks (NAMSB). He became president of that association in 1977 and then spearheaded efforts to consolidate the National Savings and Loan League and NAMSB to form the National Council of Savings Associations in 1983. The council has appointed a search committee to find a successor for Klamen, who will continue to work for the council as a part-time consultant.

Barbara D. Blum, president of The Women's National Bank, has been named chairman of the Greater Washington Board of Trade's Human Development Bureau. Blum is one of seven bureau chiefs who also serve on the Board of Trade's cabinet and executive committee.

The National Association of Urban Bankers has chosen William S. Bergman Associates of Washington to manage its affairs. Ruth C. Washington, a former government service employe, will serve as administrator for the NAUB account. TRADE

Peter T. Ruane, president of the National Moving and Storage Association, has been elected to serve a three-year term on the executive committee of the Small Business Legislative Council. The council is made up of 88 trade associations that represent more than 4 million small businesses across the country.

James G. Mercer, executive vice president of the Organization for the Protection and Advancement of Small Telephone Companies, will join the United States Telephone Association in its separations and access department, the division handling long-distance revenue. Mercer, who has worked in the telephone industry for 22 years, will join the association in May.

The National Electrical Manufacturers Association (NEMA) has named H. Brooke Stauffer assistant manager of engineering. He has been a staff engineer with NEMA for three years.