How to say "office" in Japanese

• オフィスJLPT N3approx.Common
  nounAn office as a workplace: the place where a company's people work. It suits business contexts, such as a firm's Tokyo office or moving to a new office.
  いつでも私のオフィスを訪たずねなさい。↗

  Call at my office at any time.
• 任務にんむJLPT N1approx.Common
  nounNot a place: its 'office' is the abstract sense of duty, function or mission — a role someone carries out. It never means a room or building, so it is the wrong choice for workplaces.
  彼女かのじょはその党とうの指導しどう的てき任務にんむにつくことを承認しょうにんした。↗

  She has consented to take the leadership of the party.
• 事務所じむしょJLPT N4approx.Common
  nounAn office as a place of business: the premises where a company or professional does its clerical work, seen as an establishment rather than a single room. A common word for a firm's office.
  私のおじはこの事務所じむしょで働はたらいている。↗

  My uncle works in this office.
• 事務室じむしつCommon
  nounThe 'office (room)' sense: a room for clerical work inside a larger building such as a school or company. Choose it when you mean the room itself rather than the establishment.
  大学だいがく事務室じむしつはどちらですか。↗

  Where is the registrar's office?
• 詰め所つめしょCommon
  nounSeldom the word you want for a plain office: it means a small station or duty room where staff on duty are posted, like a guardroom. Its 'office' gloss covers only that on-duty sense.

For the place, pick 「オフィス」 (a workplace) or 事務所 (a business establishment) versus 事務室 (a room); 任務 covers only the abstract sense of duty or function, and 「詰め所」 is a duty station rather than a general office.

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

• オフィスoffice
• 任務にんむduty
• 事務所じむしょoffice
• 事務室じむしつoffice (room)
• 詰め所つめしょstation
• 事業所じぎょうしょestablishment
• 官つかさoffice
• 社しゃcompany
• 執務室しつむしつoffice (e.g. the Oval Office)
• 整備室せいびしつoffice (usu. for construction, maintenance, services, etc.)
• 職掌しょくしょうofficial duties
• 取扱所とりあつかいじょservice point
• 署しょstation (esp. a police station)
• 事業場じぎょうじょうworkplace
• 局きょくoffice (e.g. post, telephone)
• 役やくposition (of responsibility)
• 椅子いすpost
• 会所かいしょworkplace (Edo period)
• 取扱店とりあつかいてんservice point
• 取扱店舗とりあつかいてんぽservice point
• 府ふ(government) office