Elasticity could mean:

• Elasticity (economics), a general term for a ratio of change. For more specific economic forms of elasticity, see:
  • Price elasticity of demand
  • Price elasticity of supply
  • Income elasticity of demand
  • Cross elasticity of demand
  • Output elasticity
  • Elasticity of substitution
  • Arc elasticity
  • Beta coefficient
  • Yield elasticity of bond value
• Elasticity (mathematics), a mathematical definition of point elasticity
• Elasticity (physics), continuum mechanics of bodies which deform reversibly under stress
• Elasticity, a comic book super power