Guignard

Guignard is a French surname. It may refer to:

• Léon Guignard (1852-1928): A French pharmacist and botanist. He is best known for his research on plant cytology, particularly the process of double fertilization in angiosperms (flowering plants). His discoveries were significant in understanding plant reproduction.
• Other individuals: There may be other individuals with the surname Guignard, though they may not be as widely known. Genealogical research would be necessary to uncover them.