Seok Ha-jung (also Seok Ha-jeong 석 하정, born January 11, 1985, as Shi Lei) is a Chinese-born South Korean table tennis player.

She won four bronze medals at major international competitions: two at the 2009 East Asian Games and one each at the 2010 Asian Games and 2012 World Championships.

Her team placed fourth at the 2012 Summer Olympics.

[1] Her world ranking varied from 12 to 65 between 2008 and 2014, peaking in early 2011.

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