Arnault may refer to: Antoine-Vincent Arnault (1766–1834), French dramatist and poet. Bernard Arnault (born 1949), French businessman. Delphine Arnault (born 1975), his daughter, a French businesswoman. Jean Arnault (born 1951), French diplomat. Jean-Claude Arnault (born 1946), French-Swedish photographer and convicted sex offender. See also. Bois-Arnault https://en.wikipedia.org/wiki/Arnault