Lauren Spencer-Smith (born September 28, 2003) is a British-born Canadian singer-songwriter from Port Alberni in British Columbia.

Her 2019 album Unplugged, Vol. 1 was a Juno Award nominee for Adult Contemporary Album of the Year at the Juno Awards of 2020, but lost to Shine a Light by Bryan Adams. She appeared as a contestant on the eighteenth season of American Idol in 2020, placing in the top 20 in the competition.

In 2022, Spencer-Smith became more known internationally when her self-released song "Fingers Crossed" reached the top 20 in numerous countries, including the US and making the top 10 of the charts in numerous countries including Australia, New Zealand and the UK. This was on the back of a demo of the song which had gone viral on TikTok. In this way, Spencer-Smith's rise to popularity and success on social media has sometimes been compared to that of American singer-songwriter Olivia Rodrigo. Spencer-Smith released her song "Flowers" in 2022 and it charted in several countries. Both songs ended up on her 2023 studio album Mirror.