Billie Eilish is an American singer and songwriter born and raised in Los Angeles, California. The question "Is Billie Eilish Catholic?" arises because many of her formative experiences took place in a Catholic school environment and a culturally Catholic family context.
While she has not offered a detailed public doctrine-by-doctrine account of her personal beliefs, available interviews and contextual reporting indicate a complex relationship with the tradition. This status clarifier outlines her background, the Catholic school setting, statements she has made about religion, and how these elements inform her public profile without asserting unverified claims.