Ronald Belford "Bon" Scott (9 July 1946 – 19 February 1980) was an Australian singer, songwriter and instrumentalist, best known for being the lead vocalist and lyricist of the Australian hard rock band AC/DC from 1974 until his death in 1980.

Scott was born in Forfar in Angus, Scotland, and spent his early years in Kirriemuir. He moved to Australia with his family in 1952 at the age of six, living in Melbourne for four years before settling in Fremantle, Western Australia.

Scott formed his first band, The Spektors, in 1964 and became the band's drummer and occasional lead vocalist. He performed in several other bands including The Valentines and Fraternity before replacing Dave Evans as the lead singer of AC/DC in 1974. AC/DC's popularity grew throughout the 1970s, initially in Australia, and then internationally. Their 1979 album Highway to Hell reached the top 20 in the United States, and the band seemed on the verge of a commercial breakthrough. However, on 19 February 1980, Scott died after a night out in London. AC/DC briefly considered disbanding, but the group recruited vocalist Brian Johnson of the British glam rock band Geordie. AC/DC's subsequent album, Back in Black, was released only five months later, and was a tribute to Scott. It went on to become the second-best-selling album in history.

In the July 2004 issue of Classic Rock, Scott was rated as number one in a list of the "100 Greatest Frontmen of All Time". Hit Parader ranked Scott as fifth on their 2006 list of the 100 Greatest Heavy Metal Vocalists of all time.