Exhibit 21 OWENS & MINOR, INC. AND SUBSIDIARIES SUBSIDIARIES OF REGISTRANT Subsidiary State of Incorporation Owens & Minor Medical, Inc. Virginia Stuart Medical, Inc. Pennsylvania Owens & Minor West, Inc. California (formerly known as National Healthcare and Hospital Supply Corporation) National Medical Supply Corporation Delaware Koley's Medical Supply, Inc. Nebraska Lyons Physician Supply Company Ohio A. Kuhlman & Co. Michigan