The Questrom School of Business (BU Questrom or Questrom) is the business school of Boston University, a private research university based in Boston. Founded in 1913 and formerly known as the College of Business Administration (CBA), then School of Management (SMG) in 1974, to now its current name in 2015.

It is the third-oldest business school in New England, after Dartmouth Tuck School of Business and Harvard Business School. The Questrom School of Business offers a Bachelor of Science in Business Administration (BSBA), Master of Business Administration (MBA) degree (full-and part-time programs, online programs), four Specialty Masters Programs, executive education programs, and three Ph.D. programs. Both the undergraduate and graduate programs offer dual degree options with other schools and colleges at Boston University.

Questrom has some 250 full-time faculty and some 200 part-time faculty, teaching fellows, and active research assistants.

In March 2015, the name was changed from the School of Management to the current, Questrom School of Business. It was named for alumnus Allen Questrom, a former CEO of Neiman Marcus, Macy's, JCPenney, among others, who with his wife Kelli, donated $50 million to Boston University.