Yee Moh Chai (Chinese: 于墨齋; pinyin: Yú MòZhāi; Jyutping: Jyu4 Mak6 Zaai1; Pe̍h-ōe-jī: U Be̍k-chai) is a Malaysian politician who had served ad the Member of Parliament for Tanjong Aru from 1995 to 2004 and for Kota Kinabalu from 2004 to 2008 and was also the Member of Sabah State Legislative Assembly for Api-Api from 1994 to 2013.
He is a member and the Deputy President of United Sabah Party (Chinese quota) since 2008.
After that, he worked as a lawyer in Dr. Yee & Associates until he was appointed into the Sabah Cabinet.
Yee made his election debut in the 1994 Sabah state election for the Likas state seat but lost to the President of SAPP, Yong Teck Lee.
In the 1995 Malaysian general election, he competed for the Tanjong Aru federal seat and was successful to defeat the incumbent, Joseph Voon.