How to say "customer" in Japanese

• 顧客こきゃくCommon
  no-adjectiveA customer or client of a business — a person or company that buys its goods or services; the word of business, sales and marketing contexts.
  銀行ぎんこうはリスクの高たかい顧客こきゃくへのローンには高たかい金利きんりをつける。↗

  Banks charge higher interest on loans to risky customers.
• カスタマーCommon
  nounThe katakana loanword for 'customer'; it chiefly appears in set expressions borrowed from English, such as customer service or customer support, and is seldom the standalone word for a customer.
• 取引先とりひきさきCommon
  nounA client company or business connection — the firm on the other side of one's business dealings; used for corporate clients and trading partners, not for individual shoppers.
  営業員えいぎょういんをこの新あたらしい取引先とりひきさきに派遣はけんしてください。↗

  Please send your sales reps to this new account.
• 消費者しょうひしゃCommon
  nounThe person as a consumer of products or services, the word of economics, marketing and consumer affairs; it frames people as consumers in the market rather than as a particular store's own customers.
  米国べいこくにおいて「リベート」は、主おもにメーカーが消費者しょうひしゃに直接ちょくせつ提供ていきょうするインセンティブ手段しゅだんとして広ひろく認識にんしきされている。↗

  In America 'rebate' is widely recognized, generally as an incentive where makers give back directly to consumers.
• 利用者りようしゃCommon
  nounSomeone who uses a service, facility or system; the word for users of public transport, libraries or online services, and it covers 'customer' when the emphasis is on using a service.
  私が関心かんしんがあるのは車くるまではなくその利用者りようしゃの方ほうだ。↗

  It is not the car but the users that I am concerned about.

Choose 顧客 for a company's paying customers, 取引先 for client companies in business dealings, 消費者 for consumers in general, 利用者 for users of a service, and 「カスタマー」 chiefly in borrowed expressions.

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

• 顧客こきゃくcustomer
• カスタマーcustomer
• 取引先とりひきさきcustomer
• 消費者しょうひしゃconsumer (of a product, service, etc.)
• 利用者りようしゃuser
• 客先きゃくさきcustomer
• 御用の方ごようのかたcustomer
• 来店客らいてんきゃくcustomer (who visits an establishment in person)
• 買い物客かいものきゃくshopper
• 利用客りようきゃくuser
• 注文者ちゅうもんしゃorderer
• 発注者はっちゅうしゃorderer
• 需要家じゅようかconsumer (of a product, service, etc.)
• 得意先とくいさき(regular) customer
• 来店者らいてんしゃvisitor (to a store, restaurant, etc.)
• 客きゃくcustomer
• お客様おきゃくさまcustomer
• きゃっcustomer
• お客さんおきゃくさんcustomer