Spoilage or spoiling may refer to:

• Decomposition, the process by which organic substances are broken down into simpler matter.
  • Food spoilage, the process in which food deteriorates to the point in which it is not edible to humans or its quality of edibility becomes reduced
• Spoilage of evidence, intentional destruction of evidence in a legal case
• Spoiling of a gradient echo magnetic resonance sequence

• Spoil (disambiguation)
• Spoiled (disambiguation)
• Decay (disambiguation)
• Decomposition (disambiguation)