Tun Dato' Sir Tan Cheng Lock, SMN, DPMJ, KBE (Chinese:陳禎祿; pinyin:Chén Zhēnlù; Pe̍h-ōe-jī:Tân Ching-lo̍k) was a Chinese Malaysian businessman and a key public figure who devoted his life to fighting for the rights and the social welfare of the Chinese community in Malaya. Tan was also the founder of the Malaysian Chinese Association (MCA), which advocated his cause for the Malaysian Chinese population.