| Sinhala Title | Original English Title | Notes / Source | | :--- | :--- | :--- | | Nadeethera Kumariya | Unknown (likely The Riverboat Mystery or similar) | Translated by Dayasena Gunasinghe | | Anthima Kemeththa | Sad Cypress | Translated by Meerigama Ashirvada | | රොජර් ඇක්රොයිඩ් මරා දැමීම | The Murder of Roger Ackroyd | One of Christie's most famous works | | සබැඳි මත මරණය | The Murder on the Links | A classic Hercule Poirot mystery | | අන්තිම කැමත්ත | Unknown (possibly Last Will and Testament ) | Available on Goodreads | | හංස ගීතය | Swan Song (likely a collection) | Listed among Sinhala translations | | — | The Moving Finger | Available in Sinhala binding | | — | Ordeal by Innocence | Available in Sinhala binding | | — | The Rose and the Yew Tree (as Mary Westmacott) | Available in Sinhala binding |
: Translations are considered derivative works and are protected under Sri Lankan copyright law; distributing them without permission is illegal. | Sinhala Title | Original English Title |