Fastest thing alive may refer to:

• Fastest animals
• The Fastest Thing Alive, the theme song for the TV series Sonic the Hedgehog

• The Fastest Kid Alive, an album
• Flash (DC Comics character), sometimes referring to himself as the fastest man alive
  • Fastest Man Alive, an episode of The Flash television series
• List of world records in athletics

This disambiguation page lists articles associated with the title Fastest thing alive.
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