Sie or SIE may refer to:
People Donald-Olivier Sié (born 1970), footballer James Sie (born 1962), voice actor John J. Sie, businessman Trish Sie, choreographer and director
Language Sie language, spoken in Vanuatu Simaa language, spoken in Zambia "Sie", proposed gender-neutral pronoun "Sie", one of the pronouns in German
Military and government Army Intelligence Service (Spanish: ), Argentina Foreign Intelligence Service (Romania) (Romanian: ) Special Intervention Squadron (Dutch ), now the Belgian Federal Police Special Units
Transportation Sherburn-in-Elmet railway station, in England Staten Island Expressway, in Staten Island, New York City, US
Video gaming Sie Kensou, a character in The King of Fighters Sony Interactive Entertainment, multinational video game and digital entertainment company
Other uses SIE (file format), for accounting data Society of Industrial Engineering, a student society Specific ion electrode
See also Sia (disambiguation) Xie (disambiguation)