Alexandre is a French and Portuguese surname. Alexandre means warrior or defending men. Notable people with the surname include:
- Aaron Alexandre (c.1765âÂÂ1850), German-born French-English chess player and writer
- Caio Alexandre (born 1999), Brazilian footballer
- Guy Alexandre (1945âÂÂ2014), Haitian diplomat
- Jean Alexandre (footballer) (born 1986), Haitian footballer
- Jean C-Alexandre (1942âÂÂ2023), Haitian doctor and diplomat
- Kathryn Alexandre (born 1990), Canadian actress
- Laurent Alexandre (born 1972), French politician
- Marcelo Alexandre (born 1963), Argentine cyclist
- Maria Eduarda Alexandre (born 2007), Brazilian rhythmic gymnast
- Matheus Alexandre (born 1999), Brazilian footballer
- Maxime Alexandre (born 1971), Belgian-Italian cinematographer
- Rodolphe Alexandre (born 1953), French politician