Bye! My Boy!

{{short description|1999 single by the Brilliant Green}}

{{Use mdy dates|date=January 2024}}

{{Infobox song

| name = Bye! My Boy!

| cover =

| alt =

| type = single

| artist = the Brilliant Green

| album = Terra 2001

| B-side = "There Will Be Love There (Ai no Aru Basho)"
"Nagai Tameiki no Youni"

| released = {{start date|1999|12|1}}
{{start date|2000|10|1}} (reissue)

| format =

| recorded = 1999

| studio =

| venue =

| genre = J-pop

| length = 15:14

| label = Sony Music Records
Defstar Records (reissue)

| lyricist = Tomoko Kawase

| composer = Shunsaku Okuda

| producer = Shunsaku Okuda

| prev_title = Call My Name

| prev_year = 1999

| next_title = Hello Another Way (Sorezore no Basho)

| next_year = 2000

| misc = {{External music video|{{YouTube|PDCt4Du2zEk|"Bye! My Boy!"}}}}

}}

"Bye! My Boy!" is the Brilliant Green's ninth single, released on December 1, 1999, by Sony Music Records, and reissued on October 1, 2000, by Defstar Records.{{cite web|title=BYE!MY BOY! {{!}} the brilliant green|url=https://www.oricon.co.jp/prof/27166/products/95672/1/|website=Oricon News|language=ja|access-date=2024-01-30}} It peaked at #29 on the Oricon Singles Chart.{{cite web|title=BYE!MY BOY! {{!}} the brilliant green|url=https://www.oricon.co.jp/prof/27166/products/230281/1/|website=Oricon News|language=ja|access-date=2024-01-30}}

The song also appears on the band's compilation album, Complete Single Collection '97–'08 (2008).