Greatest Hits is the first compilation album by American country music artist Mark Wills.

Released in 2002 on Mercury Nashville Records, it features the greatest hits from his first four studio albums: 1996's Mark Wills, 1998's Wish You Were Here, 2000's Permanently, and 2001's Loving Every Minute.

Two new tracks were also recorded for this compilation, both released as singles: "19 Somethin'" and "When You Think of Me".

The former became his second number 1 hit on the Billboard Hot Country Singles & Tracks (now Hot Country Songs) charts, holding that position for six weeks; "When You Think of Me" peaked at number 28 on the same chart.

The following musicians performed on the previously unreleased tracks "19 Somethin'" and "When You Think of Me".