Paul Louie (September 10, 1918 - October 18, 2009) was one of the three founders of the Chinese Historical Society of Southern California (CHSSC), which was established in 1975. He was born and raised in Seattle, WA, one of 11 children of a pioneering Chinese American family. Home was at 4 Canton Alley, a part of the historic Kong Yick Building, now the home of Wing Luke Museum; where he grew up is now part of the Museum's theater. After high school, Paul received a scholarship to attend the American Baptist affiliated Linfield College in Oregon. From there he went on to earn a Science of Theology Master's degree from Harvard University Divinity School in 1945.

Paul arrived in San Francisco in 1947 to work at the Chinese YMCA as Young Adults Program Director. From 1950 to 1955, although ordained by the American Baptist church, Paul became the minister of the Chinese Presbyterian Church in Oakland's Chinatown. In those days Chinese American ministers often switched denominations because of the limited number of Chinese churches in any one denomination. Opportunity to serve in a Caucasian church came in the late 1950s. For the next 15 years, Paul was the Minister of Christian Education in several Presbyterian mainstream churches in northern and southern California. While still in Divinity School, he and a few friends founded the Silver Bay Chinese Christian Youth Conference to address particular concerns, such as self-identity and racism. The conferences, existing from 1943 to 1960, attracted young people from mainly East Coast and Midwestern states. Paul's interest in social concerns led him to form a Public Affairs Committee at the Chinese YMCA; former members still hold annual lunch reunions.

In Los Angeles, along with being founders of the Chinese Historical Society of Southern California, he was involved with various local organizations and advocacy, such as when the Chinatown Service Center, Chinatown Teen Post, and Chinatown Branch Library were established. He also organized help for newly arrived Vietnamese and Cambodian refugees, for the Armenian community in Glendale troubled by ethnic conflicts in the public schools, served as an advisor for the founding of the Asian Pacific Family Center in Rosemead. Additionally, Paul Louie helped organize the Asian Presbyterian Caucus, recognizing the dramatic growth in the Asian Pacific American population and increase in the number of new ethnic churches. From 1971, until retiring in 1986, he was a consultant on the staff of the Los Angeles County Human Relations Commission.

Paul Louie also wrote a book about his father titled My Father's Rice Bowl and established the Louie Loy and Leong Shee Scholarship Fund at San Francisco State University aimed at helping children of immigrants to obtain a college education.