Megurine Luka (巡音ルカ), codenamed CV03, is a Japanese VOCALOID developed and distributed by Crypton Future Media, Inc., and was initially released in January 2009 for the VOCALOID2engine. She is the third release of Crypton's Character Vocal Seriesand is a Character Voice VOCALOID. In March 2015, additional voicebanks and an upgrade to the VOCALOID4 engine were released.

Her voice is provided by the Japanese voice actress and singer, Yū Asakawa (浅川悠 / Asakawa Yū), who was recorded in Japanese and English for the voicebank.[1][2]