How to say "caller" in Japanese

• 来客らいきゃくCommon
  nounCovers 'caller' as a person who comes to visit, at home or at work — the word you want for saying that a caller has arrived or is expected. It carries no nuance of hospitality.
  今日きょうは来客らいきゃくがあります。↗

  I'm expecting a customer today.
• 客人きゃくじんCommon
  nounReally 'guest' or 'company' — someone you welcome and entertain. It suits a caller received as a guest; for an ordinary visitor who simply comes by, 来客 is the word you want.
  客人きゃくじんたちはその幸しあわせな夫婦ふうふが末永すえながく裕福ゆうふくな人生じんせいを送おくる事ことを祈いのった。↗

  The guests wished the happy couple a long and prosperous life.

For a caller in the sense of a person who comes to visit, use 来客; 客人 is really 'guest' or 'company', viewing the caller as someone you welcome and entertain, and neither covers a telephone caller.

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

• 来客らいきゃくvisitor
• 客人きゃくじんcaller
• 訪問客ほうもんきゃくcaller
• 呼び出し側よびだしがわcaller
• 来訪者らいほうしゃvisitor