Dupetit Thouars could refer to any of the following French names:
- Louis-Marie Aubert du Petit-Thouars (1758-1831), a French botanist, brother of Aristide
- Aristide Aubert du Petit Thouars (1760-1798), a French Navy officer and a hero of the Battle of the Nile, brother of Louis-Marie
- Abel Aubert Dupetit Thouars (1793-1864), a French Navy admiral who took possession of Tahiti for France
- Abel-Nicolas Bergasse Dupetit Thouars (1832-1890), a French Navy admiral who participated to the Boshin War in Japan
- French ship Dupetit-Thouars, various ships