Sir Denis John Wolko Browne KCVO (2 April 1892 – 9 January 1967) was the first British surgeon to devote his practice entirely to the care of children. A native of Australia, he served in the Royal Australian Army Medical Corps in World War I before moving to England and joining the staff of the Hospital for Sick Children at Great Ormond Street. An amateur tennis player in the 1920s, he made four appearances at Wimbledon.