Seya (Sinhala: සේයා) is a 2018 Sri Lankan Sinhala horror film written and directed by Kalyana Chandrasekara and co-produced by A. Parister and Tharanga Athuraliya for Niro Films. It stars an all-female cast of 36 actresses, including, Udari Perera, Dilhani Ekanayake and Menik Wijewardena in lead role along with Deepani Silva, Vishaka Siriwardena and Gayathri Dias. Music composed by Sarath Wickrama. This is Sri Lanka's first all-female featuring movie. It is the 1299th Sri Lankan film in the Sinhala cinema.
| Actor | Role |
|---|---|
 Dilhani EkanayakeI.P. Waruni Dissanayake | I.P. Waruni Dissanayake |
 Udari PereraNirasha | Nirasha |
 Thushari WehellaPriya | Priya |
| MManik WijewardenaMadhuka / Krishani Mendis | Madhuka / Krishani Mendis |
| NNirosha MaithreeNimesha | Nimesha |
| DDeepani de SilvaEncina | Encina |
| GGayathree DiasDoctor | Doctor |
 Sinethi AkilaMaali | Maali |
| IIndika SubasingheFathima | Fathima |
| MManel ChandralathaKrishani's mother | Krishani's mother |
| SSewwandi DissanayakeMarry | Marry |
| MMalki FernandoKomali | Komali |
| RRoma JayakodySubadra | Subadra |
| HHelan RenoldaNirasha's mother | Nirasha's mother |
| VVishaka SiriwardhanaSchool teacher | School teacher |