Shirley Ann Manson (born 26 August 1966) is a Scottish (Scotland) musician and actress, best known internationally as the lead singer of the grunge (Grunge music) band Garbage (Garbage (band)). For much of her international career Manson commuted between her home city of Edinburgh to the United States to record with Garbage but now lives and works in Los Angeles. Manson gained media attention for her forthright style, rebellious attitude, and distinctive voice, which also won her fans throughout the world.

She began her musical career in the early 1980s, performing backing vocals and keyboards (Keyboard instrument) for Scottish band Goodbye Mr. Mackenzie before being signed (record contract) in 1993 as a solo artist (solo (music)), recording as Angelfish (Angelfish (band)). After seeing Manson in an Angelfish video (music video) on MTV, Garbage invited Manson to record with the band for one album: the multiple Grammy Award nominated Garbage (Garbage (album)). Manson remained with Garbage, writing and recording a further three studio albums and touring worldwide, racking up 17 million record sales over ten years.

In 2006, Manson began to write and record solo material after Garbage was put on "hiatus" and in 2008 was cast in her first professional acting role on the second and final season of Terminator: The Sarah Connor Chronicles as series regular Catherine Weaver, a liquid metal (Shapeshifting#Shapeshifting in popular culture) T-1001 Terminator (Terminator (character concept)).