Kōdai, Kodai, Koudai or Kohdai (こうだい or コウダイ) is a masculine Japanese given name. Notable people with the name include:

Written forms Forms in kanji can include: 広大, "wide/broad/spacious, large/big" 弘大, "vast/broad/wide, large/big" 功大, "achievement/merits/success/honor/credit, large/big" 幸大, "happiness/blessing/fortune, large/big" 滉大, "deep and broad, large/big" 昴大, "The Pleiades, large/big" 晃大, "clear, large/big" 航大, "navigate/sail/cruise/fly, large/big" 廣大, "broad/wide/spacious, large/big"

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