Happy Birthday (Sinhala: හැපි බර්ත් ඩේ) is a 2022 Sri Lankan Sinhala action mystery thriller film directed by Aruna Jayawardena[1] and produced by The Capital Maharaja Organization Limited as a Stein Film, and distributed by M Entertainments.

Although Yohani Hettiarachchi has been involved in a number of films before, this is Tashia Kalidasa's first cinematic experience.

Editing and color combination done by Asanka Wickramasiri, and film was co-directed by Amila Pahathagedara.

Sound design has done by Sasika Ruwan Marasinghe whereas Malki Wijemanne has contributed with lyrics to the film.

[6] Sunil Premaratne, who was the artistic director, can also be seen in the role of a lawyer[3] The film consists of a single song.