The Hardest Thing may refer to:
The Hardest Thing (album), an album by Toše Proeski "The Hardest Thing" (Toše Proeski song) "The Hardest Thing" (98 Degrees song), a 1999 single by 98 Degrees "The Hardest Thing" (Amphibia), the series finale of Amphibia "The Hardest Thing", a 2026 song by Gorillaz from their album The Mountain