Fredric Martin Lewis, 65, a retired business analyst with the Commerce Department, died of pulmonary complications Sunday at his home in Washington.

He had spent most of his 19 years at Commerce with the economic development administration and its predecessors except for a brief period with the business and defense services administration. He retired in 1976.

Born in New York City, Mr. Lewis grew up in Knoxville, Tenn. He studied journalism at Columbia College in New York.

After working briefly as an oil burner mechanic during the depression, he joined Dun and Bradstreet, serving in various technical and supervisory capacities, including the foreign department.

During World War II, Mr. Lewis, who was a conscientious objector, was a master sergeant with the Army Medical Corps and was with Gen. Patton's army in Germany.

He returned to Dun and Bradstreet after the war and later worked for an export-import firm in New York before coming to Washington in 1957.

At the Commerce Department, he wrote a booklet, "Alaska: Its Economy and Market Potential," at station WTOPV-TV.

He is survived by his wife, Grace Elaine, of the home.

The family suggests that expressions of sympathy may be in the form of contributions to CARE or Common Cause.