A catastrophe is a disaster, a horrible event.

It may also refer to:

• Catastrophe (drama), the climax and resolution of a plot in ancient Greek drama and poems
• Catastrophe (play), a 1982 short play by Samuel Beckett
• Catastrophe modeling, in insurance, projecting of the cost of losses due to a catastrophic event
• Catastrophe theory, a field of mathematics that studies how the behavior of dynamic systems can change drastically with small variations
• Catastrophe bond, a risk-linked security used to share risks with bond investors
• The Catastrophe, a translation of al-Nakba, referring to the 1948 Palestinian exodus

Catastrophic may refer to:

• Catastrophic, a difficulty rating in Dance Dance Revolution