Girault is a surname, and may refer to:
In people:
- Arsène Napoleon Girault (1801-1874), one of the founding faculty of the US Naval Academy.
- Alexandre Arsène Girault (1884–1941), American entomologist. Arsène Napoleon Girault's great-grandson.
- Charles Girault (1851–1932), French architect
- Charles François Girault (b. 1818), French mathematician
- Joseph-Philibert Girault de Prangey (1804–1892), French photographer and draughtsman
- Martine Girault, singer
- Olivier Girault (b. 1973), French handball player
- Stephen Girault
- Ron Girault (b. 1986), American football safety
In botany:
- Rosa 'Alexandre Girault', a rose cultivar originating from Orléans, France and developed in 1907 by Barbier Frères & Compagnie. It is not named after the American entomologist. See List of rose cultivars named after people.
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