Reflection may refer to:

• Reflection (physics), a wave phenomenon commonly observed in mirrors.
  • Reflection (electrical), reflected voltage in an electrical signal due to an impedance change
• Human self-reflection, the process of thoughtful meditation or rumination
• Reflection (mathematics), a transformation of a space
  • Reflection group, a group generated by reflections
  • Reflection principle, a theorem of set theory
  • Reflection formula, which relates function values for arguments on opposite sides of a point
• Reflection (computer science), a programming language feature for metaprogramming
• Reflection (Christina Aguilera song), a song by Christina Aguilera
• Reflection (band), a German speed-thrash metal band
• Reflection, a piece of installation art by Shane Cooper also called "Parasight"
• "Reflection", an online card game developed by Free Fall Associates

Reflexió | Refleksion | Reflexion | Reflexión | Réflexion | Reflexión | Reflectie | Отражение