Mervyn John Cross OAM (3 July 1941 – 25 August 2023) was an Australian rugby league footballer and orthopaedic surgeon.

[3] He played in Australia's major competition the New South Wales Rugby League (NSWRL) but Cross, a doctor, was better known for his achievements in the field of sports medicine as an orthopaedic surgeon.

[4] Cross was a pioneer in the field of knee surgery, entering orthopaedics in what turned out to be a golden age for the specialty.

[13] After his surgical retirement in the early 2010s, Cross teamed up with his son Tom and others to trial a new non-surgical technique for managing ACL injuries where the knee is braced at 90 degrees for six weeks to promote healing in the anatomical position.

[18] He was inducted into the American Orthopaedic Society for Sports Medicine Hall of Fame as an International member in 2007.