What is pop singer Sia's last name?

Pop singer Sia’s last name is Furler. Her full birth name is Sia Kate Isobelle Furler, and she was born in Adelaide, South Australia, in 1975. She is widely known professionally by the single name Sia, but Furler remains her family name.

Sia began her music career in the 1990s as a vocalist with the Australian acid-jazz band Crisp. After the group disbanded, she released her debut album, OnlySee, in 1997; that record was marketed under the name Sia Furler. She later gained international attention through her work with the British electronic duo Zero 7 before developing her solo pop career.

Her breakthrough as a major solo artist came with the 2014 album 1000 Forms of Fear, which included “Chandelier.” Sia is also a prolific songwriter for other performers, having contributed to songs associated with artists including Rihanna, Beyoncé, and David Guetta. A common mix-up is assuming “Sia” is a surname; it is her stage and professional name, while Furler is the surname.