Date of Birth: 
About Cheng Wan-jung
- Cheng Wan-jung (born 22 February 1988) is a Taiwanese swimmer.
- At the 2004 Olympics, she competed in the 100 and 200 m butterfly, finishing in 34th and 25th place respectively.
- At the 2012 Summer Olympics, she competed in the Women's 200 metre butterfly, finishing in 28th place overall in the heats, failing to qualify for the semifinals.
- She also competed in the 200 m individual medley finishing in 31st place.
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