Yesyears is the first box set by English progressive rock band Yes, released in August 1991 on Atco Records.

Yesyears contains studio and live tracks from 1969 to 1991 with previously unreleased mixes and songs, digitally remastered by Joe Gastwirt.

One of the major attractions of Yesyears was its inclusion of rare material, including many previously unreleased songs, and a full-colour booklet detailing Yes's history.

Yesyears was discontinued in the late 1990s, preceding the release of Rhino Records' (five-disc) box set In a Word: Yes (1969–) in 2002.

An official home video documentary on the band's history, also titled Yesyears, was released as a companion to the box set.