Arsenie Todiraş (sometimes spelt Toderaş) (born 22 July 1983) is a Moldovan singer who was the youngest member of the former boyband O-Zone (known for "Dragostea din tei"). He now pursues a solo career in Romania, under the mononym Arsenie or at times the stage name Arsenium.

Arsenie represented Moldova at the Eurovision Song Contest 2006 with the song "Loca" (Crazy in Spanish) with Natalia Gordienko featuring Connect-R, finishing in 20th place with 22 points.

He took part in the Dansez pentru tine dance contest, the Romanian version of Dancing with the Stars, and took the second place, while the first was given to the Romanian singer Andra.

His first album, The 33rd Element, was released in Romania in the summer of 2006, releases in other countries (such as Russia, Spain, Ukraine, Poland etc.) are to follow.