Irene Jansen is a Dutch singer. She sang on the Ayreon album The Human Equation, portraying the character Passion. She was also the live backing vocalist of Star One during their tour in 2003, and played the character Morgana in two Gary Hughes concept albums. She was the lead singer of a power metal band called Karma. She made her first recordings in more than a decade for the Alarion album Waves of Destruction, released in 2016.
She is the younger sister of former After Forever and ReVamp, and current Nightwish singer Floor Jansen.