Ha Jung-eun (Korean: 하정은; born 26 April 1987) is a women's and mixed doubles badminton player from South Korea.

[4] Ha was competed at the 2004 World Junior Championships in Richmond, Canada, reached the semi-finals round in the girs' singles and doubles event.

[7] In 2010, Ha with her women's doubles partner, Lee Kyung-won, became the semi-finalists in Korea Open Super Series, and with Ko Sung-hyun in the mixed event, they only reached the quarter-finals.

The next week's tournament in Switzerland brought unsatisfying result for Ha and Ko as they lost to the eventual finalists and their countrymen, Shin Baek-cheol and Yoo Hyun-young, in a tough three-setter, 21–19, 9–21, 19–21.

In the women's doubles event, she also won the Grand Prix Gold title in Swiss, U.S., and Chinese Taipei partnered with Kim Min-jung.

At the 2012 Summer Olympics, Ha and her partner Kim Min-jung, along with Jung Kyung-eun and Kim Ha-na of South Korea, Wang Xiaoli and Yu Yang of China, and Meiliana Jauhari and Greysia Polii of Indonesia were disqualified from the competition for "not using one's best efforts to win a match" and "conducting oneself in a manner that is clearly abusive or detrimental to the sport" following matches the previous evening during which they were accused of trying to lose in order to manipulate the draw.