Japan in the Wonderful Song Contest

Contestants
{{legend|gold|Winner}} {{legend|silver|Second place}} {{legend|#cc9966|Third place}} {{legend|#FE8080|Last place}}
 * Table key

{| class="sortable wikitable" ! Edition ! Artist ! Title ! Place ! Points ! Semi ! Points
 * - bgcolor="#ccccff"
 * colspan="7" Did not participate between 1st - 5th
 * 6th
 * Mondo Grosso
 * Labyrinth
 * colspan=2
 * 16
 * 45
 * 🇷🇴 7th
 * Anna Tsuchiya
 * Lucifer
 * colspan=2
 * 19
 * 30
 * 8th
 * Perfume
 * Spending All My Time
 * 29
 * 47
 * 7
 * 104
 * colspan="7" Did not participate between 9th - 19th
 * 🇪🇸 20th
 * Perfume
 * Spending All My Time
 * colspan=4
 * colspan="7" Did not participate between 21st - 28th
 * 29th
 * BoA
 * Amor
 * 23
 * 48
 * 10
 * 98
 * colspan="7" Did not participate between 30th - 39th
 * 40th
 * BoA
 * Amor
 * bgcolor=#fe8080 |26
 * bgcolor=#fe8080 |106
 * 10
 * 93
 * colspan="7" Did not participate since 41st to 44th}}
 * 45th
 * Rina Sawayama
 * XS
 * colspan=2
 * 13
 * 82
 * colspan="7" Did not participate since 46th - 49th
 * 50th
 * IZ*ONE
 * Hwan Sang Dong Hwa
 * colspan="4"
 * 45th
 * Rina Sawayama
 * XS
 * colspan=2
 * 13
 * 82
 * colspan="7" Did not participate since 46th - 49th
 * 50th
 * IZ*ONE
 * Hwan Sang Dong Hwa
 * colspan="4"
 * IZ*ONE
 * Hwan Sang Dong Hwa
 * colspan="4"