How to say "courthouse" in Japanese

• 裁判所さいばんしょCommon
  nounThe common word for a court as an institution, and the usual way to refer to the building as well. Choose it for talking about trials or where a court is located.
  裁判所さいばんしょが法律ほうりつを執行しっこうする。↗

  The courts administer the law.
• 裁判所庁舎さいばんしょちょうしゃ
  nounRefers specifically to the building housing a court rather than the court as an institution. Less common than 裁判所, it appears where the focus is on the structure itself.
• コートハウス
  nounA katakana rendering of 'courthouse', but seldom the word you want: 裁判所 serves for both the institution and its building, leaving this loanword little practical role.

Use 裁判所 for a court and, in most cases, for its building too; 裁判所庁舎 narrows the meaning to the building itself, while the loanword 「コートハウス」 is seldom needed.

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

• 裁判所さいばんしょcourt
• 裁判所庁舎さいばんしょちょうしゃcourthouse
• コートハウスcourthouse