ஓ காதல் கண்மணி
- annos singulos: 2015
- Patriam: India
- genus: Romance, Drama
- Studio: Madras Talkies
- keyword: husband wife relationship, alzheimer's disease, love, open relationship, boyfriend girlfriend relationship, sexual relationship, live in relationship
- Director: Mani Ratnam
- cast: Dulquer Salmaan, Nithya Menen, Prakash Raj, Leela Samson, Vinodhini Vaidyanathan, Ramya Subramanian