Ikaw Ay Akin is a 1978 Filipino romantic drama film directed by Ishmael Bernal from a story he wrote with Jose N. Carreon, who in turn made into a screenplay. The film tells a story about a man's guilt over his affair with another woman that hurt the feelings of his long time girlfriend.

It stars Nora Aunor, Vilma Santos, and Christopher de Leon in leading roles, and also had pre-stardom actors in minor roles, like Rene Requiestas, who would become one of the country's recognizable comedians and Sandy Andolong, who would later become de Leon's wife.

Produced by Tagalog Ilang-Ilang Productions, the film also became famous for the experimental long shot scene of the reunion between Sandra and Tere, with the two confronting each other using only their eyes. It has since been known for popularizing the term "mata-mata (eye to eye) acting."

Ikaw Ay Akin has been digitally restored and remastered by the ABS-CBN Film Archives through the facilities of Central Digital Lab in Makati City, Metro Manila.