廖秀冬博士，GBS，MBE，JP（1951年12月25日—，英文：Sarah Liao Sau-Tung），曾經做過香港環境運輸及工務局局長（2002年7月1日—2007年6月30日）。在2001年加入北京奧組委，做環境顧問。因為環境運輸及工務局局長係香港政府最高架構三司十一局嘅一部份，所以佢當時亦自動入埋去做行政會議成員。廖秀冬本身都係環保人士，曾經喺北京住過。
Dr. Sarah Liao Sau-tung, GBS, MBE, JP (25 December 1951-, English: Sarah Liao Sau-Tung) was the Secretary for the Environment, Transport and Works of Hong Kong (1 July 2002 – 30 June 2007). In 2001, he joined the Beijing Olympic Organizing Committee as an environmental consultant. As the Secretary for the Environment, Transport and Works was part of the three departments and eleven bureaux of the highest structure of the Hong Kong government, he was automatically admitted as a member of the Executive Council at that time. Liao Xiudong is also an environmentalist who once lived in Beijing.