Yu Hiu Tung (Chinese: 余曉東; pinyin: Yú Xiǎodōng; Jyutping: jyu4 hiu2 dung1; born 5 February 1984) is a professional tennis player from Hong Kong.

He quickly emerged as one of Hong Kong's most highly touted junior players.

In doubles, he and Wong Wing Luen lost to former World No.1s and eventual gold medalists Mahesh Bhupathi and Leander Paes.

In 2007, Yu gave up his professional tennis career, and began study towards an associate degree at HKU Space.

This biographical article relating to Hong Kong tennis is a stub.