
Quick answer — Yui Sakakibara voices Haruhi Kamisaka in Happiness!, Ayase Kishimoto in ChäoS;HEAd, Marie in Dies irae and 4 more characters.
Yui Sakakibara voices Haruhi Kamisaka (Happiness!), Ayase Kishimoto (ChäoS;HEAd), Marie (Dies irae), Hisako Kajiura (Otoboku: Maidens are Falling for Me), Mieru Ariake (Love, Election and Chocolate), Hamaji Yakumo (H2O: Footprints in the Sand), Navi (Dragonar Academy).
Haruhi Kamisaka is voiced in Japanese by Yui Sakakibara.