Park Chan-jong (Korean: 박찬종; Hanja: 朴燦鍾; born (1939-04-19)April 19, 1939) is a politician of South Korea, and a member of the 9th, 10th, 12th, 13th, and 14th National Assembly.
He graduated from Gyeonggi High School in 1958 and entered the Department of Economics at Seoul National University that year.
In 1976, at the age of 38, he was elected as the President of the Korean Institute of Certified Public Accountants after a close race that went into a second round of voting.
He was expelled from the Republican Party on April 7, 1980, while serving as a member of the National Assembly Special Committee on Constitutional Amendment.
At this time, he developed the image of a "clean politician" by roaming the streets alone and campaigning without paying, which led to his appearance in a "non-homogenized milk" commercial.
In July, he ran in the by-election in Seoul, but lost with 8.7%, and suddenly left politics to study abroad in Japan.
Park Chan-jong returned to politics by participating in the founding of the Democratic National Party ahead of the 2000 general election, and ran in the Jung-gu and Dong-gu constituencies in Busan, but lost.
In 2007, he was imprisoned in Seoul Detention Center for debts related to election expenses for the 14th General Election, but was released after a day, and after expressing his thoughts that "I always believed that the judicial system should be reformed, but I felt the need for it more keenly," he resumed his active career as a lawyer, and took on the defense of mathematician Kim Myeong-ho in the crossbow terrorism case, Kim Kyung-joon in the BBK case, and internet commentators Park Dae-seong and Park Yeon-cha.