Alastair Ian "Al" Stewart (born 5 September 1945) is a Scottish singer-songwriter and folk-rock musician who rose to prominence as part of the British folk revival in the 1960s and 1970s. He developed a unique style of combining folk-rock songs with delicately woven tales of characters and events from history.

Stewart is best known for his 1976 hit single "Year of the Cat", the title song from the platinum album of the same name. Though Year of the Cat and its 1978 platinum follow-up Time Passages brought Stewart his biggest worldwide commercial successes, earlier albums such as Past, Present and Future from 1973 are often seen as better examples of his intimate brand of historical folk-rock – a style to which he has returned in recent albums.