Vaa Vaathiyaar (transl. Come Teacher) is an upcoming Indian Tamil-language action comedy film written and directed by Nalan Kumarasamy. It is produced by K. E. Gnanavel Raja under Studio Green. The film stars Karthi and Krithi Shetty in the lead roles, alongside Sathyaraj, Rajkiran, Anandaraj, Shilpa Manjunath, Karunakaran, G. M. Sundar, Ramesh Thilak and P. L. Thenappan.

The film was officially announced in October 2023 under the tentative title Karthi 26, as it is the actor's 26th film as a lead actor, and the official title was announced in May 2024. Principal photography commenced in March 2023. The film has music composed by Santhosh Narayanan, cinematography handled by George C. Williams and editing by Vetre Krishnan.

Vaa Vaathiyaar is scheduled to release in theatres worldwide in January 2025, during Pongal.