How to say "millionaire" in Japanese

• 長者ちょうじゃCommon
  nounThe closest match to 'millionaire' itself: a person who has a great deal of money. Fits conversation or news about someone who has amassed a large fortune.
• 富豪ふごうJLPT N1approx.Common
  nounCovers 'wealthy person' as well as 'millionaire', with the emphasis on great wealth. A natural choice when describing someone of very substantial means.
  その大富豪だいふごうは貧まずしい少年しょうねんとして生涯しょうがいを始はじめた。↗

  The millionaire began life as a poor boy.
• 富者ふしゃCommon
  nounA general word for 'rich person' that also renders 'millionaire'; it is the one that additionally covers 'the wealthy' as a class, suiting general statements about rich people.

For a straightforward 'millionaire' pick 長者; pick 富豪 when great wealth is the point and 'wealthy person' also fits; pick 富者 for the generic 'rich person' or for 'the wealthy' as a class.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 長者ちょうじゃmillionaire
• 富豪ふごうwealthy person
• 富者ふしゃrich person
• ミリオネアmillionaire
• 百万長者ひゃくまんちょうじゃmillionaire
• 大尽だいじんrich person
• 金満家きんまんかvery wealthy person
• 億り人おくりびとperson who has a fortune of at least one hundred million yen