Retired Vice Adm. Felix L. Johnson, 84, a former director of Naval Intelligence and a staff officer in the South Pacific during World War II, died of pneumonia Thursday at the Naval Hospital at Patuxent River, Md. He lived in Leonardtown, Md.

During the war, Adm. Johnson was assistant chief of staff to Adm. William F. Halsey, commander of Naval forces in the South Pacific and the Philippine Islands. Toward the end of the war, he commanded the cruiser Springfield when it escorted President Roosevelt to the Yalta Conference, where the Western and Soviet spheres of influence in Europe were defined.

After the war, he was the director of the Navy's public relations. He was director of Naval Intelligence from 1949 until his retirement in 1952.

Adm. Johnson, who was born in Aberdeen, N.C., graduated from the U.S. Naval Academy in 1920.

His military decorations included the Legion of Merit, the Bronze Star and awards from the governments of France, Brazil and Chile.

Adm. Johnson was a member of the Army & Navy Club in Washington and the Army Navy Country Club in Arlington.

Survivors include his wife of 60 years, the former Fay Doyen, of Leonardtown; two daughters, Doyen Salsig of Arizona and Felicia West of Leonardtown, eight grandchildren and three great-grandchildren.