Malcolm Mitchell Young (6 January 1953 – 18 November 2017) was a Scottish-born Australian musician, best known as the co-founder, rhythm guitarist, backing vocalist, and songwriter for the iconic hard rock band AC/DC. Born in Glasgow, Scotland, Young moved to Australia with his family in 1963. He formed AC/DC in 1973 alongside his younger brother, Angus Young. Known for his powerful rhythm guitar work, Malcolm was considered the driving force behind the band's sound and success, contributing to classic albums such as "Back in Black," "Highway to Hell," and "High Voltage."

Despite being less visible than his brother Angus, Malcolm's influence on the band was profound, crafting the riffs and structures that defined AC/DC's music. His work earned him and the band induction into the Rock and Roll Hall of Fame in 2003. Rolling Stone magazine ranked him as the 38th greatest guitarist of all time, a testament to his impact on rock music.

Malcolm's career with AC/DC was briefly interrupted in 1988 due to personal issues, but he returned to the band until 2014 when he retired due to health issues related to dementia. He passed away on 18 November 2017 in Elizabeth Bay, New South Wales, Australia, leaving behind a legacy that continues to inspire musicians worldwide.