"Old Thing Back" is a 2015 single by Norwegian DJ Matoma that is a club remix of the 2007 song "Want That Old Thing Back" by The Notorious B.I.G. featuring Ja Rule and Ralph Tresvant. "Want That Old Thing Back" appeared on the compilation album Greatest Hits, and is a remix of the 1995 Notorious B.I.G. single "One More Chance". "Old Thing Back" is credited to "Matoma and The Notorious B.I.G. featuring Ja Rule & Ralph Tresvant", making this Matoma's debut single as a main artist.

Tom Stræte Lagergren, professionally known as Matoma, is a Norwegian DJ and record producer.