Richelieu could refer to:
- People:
- Richelieu, also known as Armand Jean du Plessis de Richelieu, Cardinal-Duc de Richelieu
- Starships and vehicles:
- USS Richelieu (NCC-1750), a Constitution-class starship
- USS Richelieu (NCC-1519), a Miranda-class starship
- USS Richelieu (Sovereign-class)
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