French politician, president of the National Assembly, and premier.

Delmas was educated in political science and law and worked as a journalist before joining the army in 1938. As one of the early members of the Résistance (resistance) (joined December 1940), he used Chaban as his code name, which he later legally added to his own. He was extremely active in the Résistance, and after joining the Free French government (October 1943), he became the main liaison officer between the Résistance and the Free French general staff. In that capacity he was able to persuade the Allies to enter Paris rather than bypass it and to persuade the other Résistance leaders to defer any Parisian uprising until the Allies were close enough to be of help. Owing in large part to his efforts, the city was taken with a minimum loss of life. As a reward, General Charles de Gaulle (Gaulle, Charles de) promoted him to general (1944). In 1945 Chaban-Delmas passed the civil-service examination and became an inspector of finance.

Chaban-Delmas ran for deputy to the National Assembly as a Radical Socialist (1946). His war record and affable personality won him easy victories in this and successive elections, and from 1947 he also served as mayor of Bordeaux. He also was accomplished at tennis and an avid player of rugby; he won a senior men's tennis doubles championship in Paris in 1970 and often shocked or amused his constituents by playing rugby in the city's stadium. He remained mayor of Bordeaux until 1995, when he was forced to retire because of failing health.

After the Gaullist (Rally for the Republic) party was founded in 1947, Chaban-Delmas had to choose between the radicals and the Gaullists. He chose the Gaullists, becoming a major force in their left wing. He also held cabinet posts in several Fourth Republic governments, serving as minister of public works (1954–55), minister of state (1956–57), and defense minister (1957–58). He served as the chairman of the (Gaullist) Social Republicans group from 1953 and became a leader of the (Gaullist) Union for the New Republic. In this capacity he was active in the return of de Gaulle to power in 1958 and the formation of the Fifth Republic.

Chaban-Delmas's presidency of the National Assembly (from 1958 to 1969) was interrupted when he became premier under Georges Pompidou (Pompidou, Georges) on June 20, 1969. However, his plan for a “new society,” which included numerous liberal reforms, fell under attack, and on July 5, 1972, Chaban-Delmas was forced to resign. The following year he became inspector general of finances and from 1978 to 1981 served again as president of the National Assembly. In 1974 Chaban-Delmas ran unsuccessfully for president. His writings include L'ardeur (1975; “Ardour”); a biography, Charles de Gaulle (1980); and La Libération (1984).