| Post: | Sri Lankan Ambassador to Japan |
| Insignia: | Emblem of Sri Lanka.svg |
| Insigniasize: | 80 |
| Insigniacaption: | Emblem of Sri Lanka |
| Reports To: | Minister of Foreign Affairs |
| Termlength: | No fixed term |
| Incumbent: | Rodney Perera |
| Incumbentsince: | January 2023 |
| Nominator: | The President of Sri Lanka |
| Department: | Ministry of Foreign Affairs |
| Seat: | Sri Lankan Embessy, 2-1-54, Takanawa, Minato-ku, Tokyo, Japan |
| Inaugural: | Sir Susantha de Fonseka |
The ambassador of Democratic Socialist Republic of Sri Lanka is the ambassador from Sri Lanka to Japan.