Paul Barton Brown, 28, a Washington lawyer, and his companion, Gale Jackler, 21, also of Washington, were killed Christmas Day in a traffic accident in Freeport, Bahamas.

Freeport police said they were in a jeep that was in a crash involving a bus and a station wagon. Four other persons died in the accident and 20 were injured, police said.

Mr. Brown had been with the law firm of Hogan and Hartson since 1979. Miss Jackler was an executive assistant with the National Conference of State Legislatures.

A native of Kansas City, Mo., Mr. Brown graduated in 1974 from Williams College in Massachusetts, where he was elected to Phi Bet Kappa. w

He then traveled on a fellowship through Africa and Asia before earning a law degree from Harvard in 1978. He worked for Chief Justice Vincent L. McKusick of the Supreme Judicial Court of Maine until joining Hogan and Hartson.

Miss Jackler was born in Long Branch, N.J. She completed her sophomore year at Brandeis University in 1979 and had taken a sabbatical to work in the campaign of Sen. Edward M. Kennedy (D-Mass.). She also had worked in the Office of Family Assistance of the Social Security Administration. She had been a volunteer with the Hot Line for the Family Center here.

Mr. Brown is survived by his father and stepmother, Paul and Reeva Brown of Kansas City, Mo., and three sisters, Susan B. Tucker of New York City, Leslee E. Blackler of Windham, N.H., and Elizabeth Ellen Brown of Los Angeles. His mother, Esther Brown, died in 1970.

The family suggests that expressions of sympathy be in the form of contributions to the P. Barton Brown Fund for Minority Students, Department of Development, Williams College, P.O. Box 231, Williamstown, Mass., 01267.

Miss Jackler is survived by her parents, Daniel I. and Bernice D. Jackler, a sister, Ann, and a brother, Mark, all of Ardsley, N.Y.

The family suggests that expressions of sympathy be in the form of contributions to the college scholarship fund in memory of Gale Jackler at Woodlands Community Temple at 50 Worthington Rd., White Plains, N.Y., 10607.