Maria has done the following roles in audio drama.

Bastard [CD]	Shera I-Ri
Calm Breaker [CD]	Sally
Cobalt Tokimeki Drama CD Remix [CD] {Maria-sama ga Miteru}	?
Cyberbots [CD]	Devilot Hime
Dragon Quest V CD Theater [CD] {volume 1,2}	Bianca
Gall Force Earth Chapter Back to the school wars [CD]	Fortin
God Save The Sugekomakun! Ultra soushingeki!! Sugekoma daisassen!? [CD]	M1 Gou (Amemiya Emuko)
God Save The Sugekomakun! Ultra soushingeki!! Sugekoma daisassen!? [CD]	Matsuzawa Mamiko-sensei
Kishin Heidan Rei [CD]	?
Little Princess -Marl Oukoku no Ningyouhime 2- Another Diary [CD]	?
Little Princess: Marl Oukoku no Ningyouhime 2 [CD]	Kururu (Krusale Cherie Marl Q)
Little Princess: Marl Oukoku no Ningyouhime 2 [CD]	Sharute
M.M.S. Bangai Dreaming Party Yuki [CD]	?
Madara -Ao Gilgamesh Saga [CD] {Vol 1}	Ishtar
Mugen Chitai Megazone 23 Image Album "Ushinawareta season" [CD]	?
Scramble Wars "Yami no Labyrinth" Drama Hen [CD]	Foltin
Street Fighter EX [radio]	Eliza
Valkyrie Profile Voice Mix Arrange [CD]	?
Yagami-kun no katei no jijou [CD] {vol 3}	Mayuki