Robert Boisseau Pamplin Jr. (born September 3, 1941) is an American businessman, philanthropist, and minister. He is also noted as an educator, historic preservationist and author.

A longtime Oregonian, Pamplin is chairman, president and CEO of R.B. Pamplin Corporation, a family-owned company headquartered in Portland. It is one of the largest private corporations in Oregon. He has appeared on the Forbes 400 list of wealthiest Americans. In 2001, he was reported to be the third-wealthiest person in Oregon.

Pamplin's holdings include textile company Mount Vernon Mills, and the Pamplin Media Group.

Pamplin was born in Augusta, Georgia to Robert B. and Katherine Reese Pamplin.

In 1953, Pamplin moved with his family to Oregon. As a 10-year-old recovering from a year-long bout with hepatitis that made him bedridden, Pamplin began training in the Charles Atlas weightlifting method to regain his strength. In high school, he became an AAU Olympic Lifts weightlifting champion which led to a lifelong commitment to fitness.

After graduating from Lincoln High School in Portland, Pamplin studied at Virginia Polytechnic Institute and State University, ultimately transferring to Lewis and Clark College in 1962 to complete his undergraduate training. Pamplin has received eight degrees, including two doctorates:

In 1965, while in college, Pamplin became a licensed stockbroker and transformed a modest inheritance into his first million dollars through careful investing.

Pamplin and his wife Marilyn live in Lake Oswego, a suburb of Portland.