Sir Roderick David Stewart (born 10 January 1945) is a British singer and songwriter. Known for his distinctive raspy singing voice, Stewart is among the best-selling music artists of all time, having sold more than 120 million records worldwide. His music career began in 1962 when he took up busking with a harmonica. He was a member of various bands before joining the Jeff Beck Group in 1967. Joining Faces in 1969, he also launched a solo career, releasing his debut album, An Old Raincoat Won't Ever Let You Down, that year. Stewart's early albums were a fusion of rock, folk music, soul music, and R&B. His third album, 1971's Every Picture Tells a Story, was his breakthrough, topping the charts in the UK, US, Canada and Australia, as did its single "Maggie May". His 1972 follow-up album, Never a Dull Moment, also reached number one in the UK and Australia, while going top three in the US and Canada. Its single, "You Wear It Well", topped the UK chart and was a moderate hit elsewhere.

After Faces broke up in 1975, Stewart's commercial success continued, starting with the UK number-one album Atlantic Crossing and the ballad "Sailing". A Night on the Town (1976), his fifth straight chart-topper in the UK, began a three-album run of going number one or top three in the US, Canada, the UK and Australia with each release. That album's "Tonight's the Night (Gonna Be Alright)" spent almost two months at number one in the US and Canada, and made the top five in other countries. Foot Loose & Fancy Free (1977) contained the hit "You're in My Heart (The Final Acclaim)" as well as the rocker "Hot Legs". Blondes Have More Fun (1978) and its disco-tinged "Da Ya Think I'm Sexy?" both went to number one in Canada, Australia and the US, with "Da Ya Think I'm Sexy?" also hitting number one in the UK and the top ten in other countries. Stewart's albums regularly hit the upper levels of the charts in the Netherlands in the 1970s and in Sweden from 1975 onward.

After a disco and new wave period in the late 1970s and early 1980s, Stewart's music turned to a soft rock/middle-of-the-road style, with most of his albums reaching the top ten in the UK, Germany and Sweden, but faring less well in the US. The single "Rhythm of My Heart" was a top five hit in the UK, US and other countries, with its source album, 1991's Vagabond Heart, becoming, at number ten in the US and number two in the UK, his highest-charting album in a decade. In 1993, he collaborated with Bryan Adams and Sting on the power ballad "All for Love", which went to number one in many countries. In the early 2000s he released a series of successful albums which interpreted the Great American Songbook.

In 2008, Billboard magazine ranked Stewart the 17th most successful artist on the "Billboard Hot 100 All-Time Top Artists". A Grammy and Brit Award recipient, he was voted at No. 33 in Q Magazine's list of the Top 100 Greatest Singers of all time. As a solo artist, Stewart was inducted into the US Rock and Roll Hall of Fame in 1994 and the UK Music Hall of Fame in 2006, and he was inducted a second time into the Rock and Roll Hall of Fame in 2012 as a member of Faces. He has had 10 number-one albums and 31 top-ten singles in the UK, six of which reached number one. Stewart has had 16 top-ten singles in the US, with four reaching number one on the Billboard Hot 100. He was knighted in Britain's 2016 Birthday Honours for services to music and charity. Guitarist Steve Cropper said Stewart ranked alongside Otis Redding as "the finest singer with whom he had ever worked".