Nadar may refer to:
- Nadar (photographer), the pseudonym of photographer Gaspard-Félix Tournachon
- Nadar (caste), a prominent Tamil caste of India and in the Tamil diaspora. Nadar (also referred as Kshatriya Nadar, Nadan, Nataar, and Shanar) is one of the prominent Castes of Tamil Nadu, South
- Prix Nadar, an annual award for a photography book edited in France. The Prix Nadar is an annual prize awarded for a Photography book edited in France.
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