Decoy, quiet, or modest
Koy is a rare name with multiple potential roots. It is often considered a variation of the English word 'decoy' or the surname McCoy, but it can also be linked to the Dutch word 'kooi', meaning an enclosure or cage used for catching wildfowl. In a modern context, it is sometimes chosen for its phonetic similarity to names like Kai or Coy.
About 18 boys were named Koy in 2025.
US births per 5-year period, 1990–present (SSA data).
Former NFL quarterback
Character in the manga series Alita: Battle Angel · Alita: Battle Angel