Paul J. Walsh, 67, a retired Army lieutenant colonel and deputy chief of the Army Chemical Corps intelligence agency who later worked for the Defense Intelligence Agency, died of congestive heart failure Thursday at Commonwealth Doctors Hospital in Fairfax.

Mr. Walsh, who was born in Philadelphia, earned a bachelor's degree in chemistry from Rensselaer Polytechnic Institute in Troy, N. Y.

After serving in the Army Chemical Corps in the Pacific in World War II, he joined the Army Reserve and worked for a Philadelphia chemical company.

During the Korean conflict, he was recalled to active duty with the Chemical Corps intelligence agency, serving as an intelligence officer in Germany from 1952 to 1956, when he became a staff instructor at the Chemical Corps School at Fort McClellan, Ark.

In 1960, Mr. Walsh was transferred to Washington. He was promoted to deputy chief of the Chemical Corps intelligence agency in 1964 and retired in 1972.

A resident of Fairfax City, he worked as a civilian for the Defense Intelligence Agency for about three years, and then became lay parish administrator for St. Leo's Catholic Church in Fairfax City. He retired a second time in 1978.

Mr. Walsh's military decorations include the Legion of Merit and Bronze Star Medal with oak leaf cluster.

Survivors include his wife, Josephine W. of Fairfax City; a son, Philip J. of Chantilly; a daughter, Barbara W. Gibson of Alexandria: a sister, Margaret D. Walsh of Philadelphia; a brother, John E. of Alexandria, and a granddaughter.

The family suggests that expressions of sympathy be in the form of contributions to the Fairfax chapter of the Potomac Lung Association.