International Society of Biomechanics in Sport (ISBS) is the only international society totally dedicated to biomechanics in sports.

Biomechanics World Wide has links to most biomechanics sites.

ErgoWeb is the place for ergonomics.

Berkeley Orthopaedic Biomechanics Laboratory in the Department of Mechanical Engineering at UC Berkeley.

Johns Hopkins Orthopaedic Biomechanics Laboratory deals with application of engineering principles to the treatment of patients.