John Leslie (Jack) Taylor, 58, a retired Navy commander who was a senior analyst and director of group administration at Analytics Inc., an engineering firm in McLean, died of cancer Monday at the Bethesda Naval Hospital.

Mr. Taylor was born in San Francisco and grew up in Vallejo, Calif. He enlisted in the Navy in 1940 and served on the battleship Tennessee. He then was appointed a midshipman at the Naval Academy at Annapolis and graduated in 1945.

He became a pilot and served at various stations on the U.S. mainland and in Hawaii. He was a liaison officer in the Bureau of Personnel in the Navy Department at his retirement in 1967.

Mr. Taylor's first employment after leaving the service was as a project manager with Tracor Inc., an electronics firm. In 1970 and 1971, he worked for Prince George's Properties Inc. From 1971 to 1975, he was a senior analyst with Sparcom Inc., a defense consulting firm in Alexandria. He joined Analytics Inc. in 1975.

A resident of Falls Church, Mr. Taylor was active in civic affairs there. He also was a gardener and a member of the Old Dominion Chrysanthemum Society.

His marriage to the former Doris Risley ended in divorce.

Survivors include three daughters, Kathleen Locke of Williamsburg, Kristine Nuschke of Newburg, Pa., and Tracie Karol, of Richmond; one sister, Joyce Holloway of Sacramento, Calif., and six grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Linus Pauling Institute of Science and Medicine, 2700 Sandhill Rd., Menlo Park, Calif., 94025.