Contagion may refer to:

In medicine:

• Contagious disease

In literature:

• Batman: Contagion, a story arc in the Batman comic book series
• Contagion (novel), one of Robin Cook's most successful bestsellers

In other fields:

• "Contagion" (TNG episode), a second season episode of Star Trek: The Next Generation
• Emotional contagion, concept in sociology
• Financial contagion, the phenomena when one country's economy is jolted because of asset prices of another country's financial market
• Hysterical contagion, concept in psychology
• Sacred Contagion, the belief that spiritual properties within an object, place, or person may be passed to another object, place, or person
• Coded Arms: Contagion, sequel to Coded Arms, on the Playstation Portable

See also

• Disease
• Pandemic
• Virus