"Blue Sky Blue"
Single by Rythem
from the album Utatane
Released	November 19, 2003
Genre	Pop
Label	Sony Music Japan
Songwriter(s)	Rei Nakanishi, Nobuyuki Shimizu
Rythem singles chronology
"'Tenkyu (New Summer Version)'" (2003) "Blue Sky Blue" (2003) "'Hitoritabi Shararuran'" (2004)

"Blue Sky Blue" (ブルースカイ・ブルー) is the J-pop duoあ Rythem's third single under Sony Music Entertainment Japan. This single was released on November 19, 2003. The single only managed to peak at the #94 spot in the Oricon weekly charts making it their second consecutive single that didn't reach the top 30 and the second weakest single that the duo released.

The item's stock number is AICL-1496.

Track listing

1. "Blue Sky Blue"

   Composition: Rei Nakanishi

   Arrangement: Hiroshi Miyagawa

   Lyrics: Nobuyuki Shimizu

2. "Onna Tomodachi"
3. "Blue Sky Blue" (Brass Band version)
4. "Blue Sky Blue" (instrumental)