Alexandria "Sandi" Thom (/tɒm/) (born 11 August 1981) is a Scottish singer-songwriter and multi-instrumentalist from Banff, Scotland. She became widely known in 2006 after her debut single, "I Wish I Was a Punk Rocker (With Flowers in My Hair)", topped the UK Singles Chart in June of that year, as well as in Australia, Ireland and her native Scotland. The single became the biggest-selling single of 2006 in Australia, where it spent ten weeks at the top of the ARIA Singles Chart.
Thom has released six studio albums throughout her career, Smile... It Confuses People (2006), The Pink & the Lily (2008), Merchants and Thieves (2010), Flesh and Blood (2012), The Covers Collection (2013) and Ghosts (2019).