Substance is a singles compilation album by the English rock band Joy Division.

Substance compiles the four singles released by the band that did not appear on albums — "Transmission", "Komakino", "Love Will Tear Us Apart", and "Atmosphere" — as well as most of their B-sides.

Later CD pressings issued by London Records contain a previously unreleased mix of "She's Lost Control" that is slightly different from the original single release.

Substance was digitally remastered in 2015, containing not only the alternative mix of "She's Lost Control", but also two additional tracks: "As You Said" (the second B-side of "Komakino") and the initial take of "Love Will Tear Us Apart" (originally released on the B-side of the original single), dubbed the "Pennine Version" after the studio it was recorded at.

Brett Wickens, who worked on this cover whilst a partner at Saville Associates, claims this was for aesthetic reasons.