Loss may refer to:

• bereavement and grief when a beloved friend, relative, companion, pet, or partner is missing or dies (see also animal loss)
• Attenuation or negative gain:
  • Attenuation (electronics) is the decrease in amplitude of an electrical signal.
  • Attenuation (electromagnetic radiation) is the decrease in intensity of light or radio waves due to scattering or absorption of photons.
• lost property, when a possession becomes misplaced
• Loss (album), the debut album of Mull Historical Society
• "The Loss" (TNG episode), a fourth-season episode of Star Trek: The Next Generation
• loss (baseball), a pitching statistic in baseball that, combined with wins, comprises a pitcher's record

Verlust | Loser | Perte | Perdajo