Japan
File:Flag of Japan.svg Japan first participated in Season 1 of Melodia Song Contest and have participated a total of 6 times. They have not won the contest before.
Participations
| Edition | Delegation | Song | Artist | Grand Final | Semi-Finals | |||
|---|---|---|---|---|---|---|---|---|
| # | Location | Place | Points | Place | Points | |||
| 01 | File:Flag of Argentina.svg Buenos Aires | blueythesharkie | "終点の先が在るとするならば" | TUYU | 9 | 56 | No Semi-Finals | |
| 02 | File:Flag of Switzerland.svg Lugano | blueythesharkie | "Dynasty" | Rina Sawayama | 6 | 71 | ||
| Did Not Participate, Season 3 | ||||||||
| 04 | File:Flag of France.svg Saint-Denis | TNG | "Karanokokoro" | Anly | 11 | 51 | No Semi-Finals | |
| 05 | File:Flag of United Kingdom.svg Reading | eurofan98 | "Click" | ME:I | 17 | 46 | ||
| 06 | File:Flag of France.svg Belfort | blueythesharkie | "Ego Eimi" | BlackY, Risa Yuzuki | 25 | 25 | ||
| 07 | File:Flag of Türkiye.svg Istanbul | littleduckiie | "Tokyo Calling" | Atarashii Gakko! | 8 | 65 | ||
