Jason Jung (Chinese: 莊吉生; pinyin: Zhuāng Jíshēng; Pe̍h-ōe-jī: Chng Kit-seng; Taiwanese Mandarin: [tswáŋ tɕǐ sə́ŋ]; born 15 June 1989) is an American-born Taiwanese inactive professional tennis player representing team Chinese Taipei.

As a tennis player, he was the National and Midwest Regional winner of the ITA/Arthur Ashe Award for Leadership & Sportsmanship in 2010, made the All Big Ten team as a junior and senior, and is 4th all-time in Michigan history in career doubles wins.

[2] He was featured in an article by ESPN's Grantland (along with fellow Michigan alum Evan King and up-and-coming players Frances Tiafoe and William Blumberg) that highlighted the struggles and low prize money in playing on the ITF Futures Tour.

[3] Jung's reached his first quarterfinal at the 2018 Hall of Fame Tennis Championships in Newport, Rhode Island.

He defeated veteran Nicolas Mahut in the second round, but his run was ended by Tim Smyczek, who outlasted Jung 6–1, 5–7, 6–4 in a nearly two-hour, 185-point quarterfinal match.