Gunparade Orchestra: Green Chapter ~Samurai and his Boy~ (ガンパレード・オーケストラ 緑の章 〜狼と彼の少年〜) is a Japanese game co-developed by io-spiral, Dice Corporation and Alfa System. It was the second fo the Gunparade Orchestra game trilogy to be released for Playstation 2 on March 30, 2006.

The game continues the story from the White Chapter. The player character appearing in the white chapter can be transferred. However, the transfer character can only be used as a player character and can not be transferred as an NPC. Also, in the blue chapter, it has been improved so that it can be transferred as an NPC.