What is D Gray man theme song?

Answer 1

Opening Theme:#1: "INNOCENT SORROW" by abingdon boys school (eps 1-25)

#2: "Brightdown" by Nami Tamaki (eps 26-51)

#3: "Doubt & Trust ～ダウト&トラスト～" by access(eps 52-76)

#4: "Gekidou" by UVERworld (eps 77-103)

Answer 2

Ending Theme:#1: "SNOW KISS" by NIRGILIS (eps 1-13)

#2: "Pride of Tomorrow" by JUNE (eps 14-25)

#3: "Yume no Tsuduki e" by surface (eps 26-38)

#4: "Antoinette Blue" by Nana Kitade (eps 39-51)

#5: "Anata ga Koko ni Iru Riyuu" by Rie fu (eps 52-64)

#6: "Wish" by Sowelu (eps 65-76)

#7: "Regret" by Mai Hoshimura (eps 77-)

#8: "Changin" by Stephanie (eps 90-)