Louis P. Crowley, 58, an insurance broker and the president of Walker and Dunlop Agency Inc. of Washington, died of kidney failure Wednesday at Georgetown University Hospital. He lived in Washington.

A native Washingtonian, Mr. Crowley graduated from Georgetown Preparatory School and Georgetown University.

During World War II, he served with the Army's 750th Tank Battalion in Europe.

In 1948, he began his career with Walker and Dunlop Inc., a mortgage, real estate and insurance brokerage. He was vice president of its insurance division from 1950 to 1976, when he was appointed president.

He was active in the administration of the Merrick Boys Camp in Southern Maryland that provides free vacations for boys, and served as president of the camp in the mid-1960s. He also was a member of the board of directors of the Catholic Youth Organization.

Mr. Crowley was a member of the boards of directors of the Washington Board of Realtors, the Washington Metropolitan Association of Independent Insurance Agents and the Friendly Sons of St. Patrick. He was a former member of the Greater Washington Board of Trade.

Survivors include his wife, Teresa F., and a son, Louis P. Jr., both of Washington; four daughters, Teresa McCagh of Crofton, Margaret A. Crowley of Washington, Maureen Crowley-Gannon of Silver Spring, and Kathleen Lafionatis of Alexandria; his mother, Frances Crowley of Chevy Chase; a sister, Frances Hurney; four brothers, Joseph J., John T., Robert J., and Thomas B. Crowley, and a granddaughter.