Sia is an Australian singer, songwriter, record producer, composer, actor, and film director born in Adelaide on 18 December 1975.

Educated at Adelaide High School, Sia began building her recorded output in the early 2000s, releasing the studio album Healing Is Difficult in 2001 and following it with Colour the Small One in 2004. These early works established her presence as a recording artist working in English, and her catalogue continued to expand across subsequent years. Further albums — among them Some People Have Real Problems, We Are Born, 1000 Forms of Fear, This Is Acting, and Everyday Is Christmas — extended the range of her output and demonstrated a sustained engagement with commercial songwriting and production across different contexts and formats.

Her work sits within the genres of electropop and indie pop, and her roles across the music industry have extended well beyond performing. As a songwriter, composer, and record producer, she has operated on multiple sides of the creative process, while her activity as an actor and film director marks an involvement in visual and narrative media beyond recorded music alone. The breadth of those credited roles — singer, songwriter, composer, record producer, musician, actor, director — reflects a career conducted across several interconnected disciplines, with electropop and indie pop remaining the consistent genre anchors throughout her body of work.