Government Employees Insurance Co. has named William B. Snyder executive vice president.

Snyder joined Geico in 1977 as senior vice president, and in 1978 was put in charge of marketing and field operations. He now will assume the additional responsibilities for overall management of insurance operations.

J. Willard Marriott Jr., president and chief executive officer of Marriott Corp., has been elected chairman of the board of Citizen's Choice Inc., a national citizen's lobby affiliated with the Chamber of Commerce of the United States.

In accepting the leadership of the 32,000-member organization, Marriott said, "Through Citizen's Choice, we can work to reduce taxes and inflation, slow the growth of government and demand economic-impact considerations for all new government regulations."

Marriott succeeds Jay VanAndel, who served as chairman of Citizen's Choice since its founding in 1976.

Judy Moore Kaufman has resigned as a senior vice president of Daniel J. Edelman Inc. to open her own public relations firm, JMK Unlimited, at 1730 K St. NW.

Kaufman joined Edelman in 1973 after serving as staff assistant to then President Nixon. Prior to that she was public relations director for the National Federation of Business and Professional Women's Clubs Inc.

David Stuart, an account executive with E.F. Hutton at the firm's Connecticut Ave. office, has been appointed to the 1979 Directors' Advisory Council. The group is composed of Hutton's top account executives who give advice to the board of directors as well as to the executive committee.

Walter J. Short has been elected vice chairman of the board and an executive vice president of Allegheny Airlines.

Short has been with Allegheny since 1949 and served most recently as executive vice president for finance.

Gerald B. File has been appointed vice president and resident of the Washington office of Winthrop Securities Co. Inc., a Boston-based investment banking firm. He will dfirect the placement of investments in commercial real estate under net leases and government assisted multi-family housing programs for middle-income and elderly citizens.

First Virginia Banks Inc. has promoted A. Paul Lanzillotta to senior vice president, trust services; Ronald Braciak to vice president, corporate methods; and James B. Pask to assistant vice president, real estate.

Lanzillotta also serves as executive vice president, trust services, of First Virginia Bank, the largest of the corporation's 20 member banks.

Braciak has been director of the company's corporate methods and procedures department since 1977. Prior to joining First Virginia, he worked for Marine Midland Bank in Buffalo, N.Y. Pask joined the corporation in 1977 as real estate manager. CAPTION: Picture, WILLIAM B. SNYDER . . . additional responsibilities