商務往來書信中，為了節省時間或是讓文字看起來更簡潔有力，就常會用英文縮寫來表達，那有哪些縮寫呢？現在來一探究竟吧！

Ltd. 股份有限公司 = Limited (company)

Co. 公司 = company

corp. 企業 = corporation

PR 公關 = public relations

R&D 研發 = research and development

HR 人力資源 = human resource

COO 營運長 = chief operating officer

CEO 執行長；首席執行官；總裁 = chief executive officer

GM 總經理 = general manager

MD 總經理 = managing director

VP 副總 = vice president

TA 目標受眾 = target audience

OEM 代工廠 = original equipment manufacturer

KPI 關鍵績效指標 = key performance indicator

ROI 投資利潤 = return on investment

OOS 缺貨 = out-of-stock

CD 定期大額存單 = certificate deposit

WFH在家上班模式 = work from home

RSVP請回覆（法文縮寫） = reply, if you please (répondez s’il vous plaît)

ASAP 儘快 = as soon as possible

EOD 今天以內 = end of day

YTD 年初至今 = year to date

OOO 不在辦公室 = out of the office

TTYL 晚點聊 = Talk to you later

CC 副本 = carbon copy

Fw 轉寄 = forward

RE 回覆／關於 = reply / regarding

NRN 不需要回覆 = no reply necessary

TBD 待確認 = to be determined

FYI 資訊供你參考 = for your information