Peter Lee Jung-sum (23 October 1939 – 3 September 2008), was a former assistant director of Hong Kong Observatory.
In May 1959, Lee joined Bruce in Seattle for a short stay and proceeded to Minnesota to further his studies.
In 1983, Lee completed his PhD at the Department of Electrical Engineering at the University of Hong Kong.
The title of his doctoral thesis was "A ground clutter processor for the Royal Observatory's 10-cm meteorological radar".
The adult Lee was portrayed by Hong Kong singer Charles Ying, and ten-year-old Peter was portrayed by the child actor Wei Zi-li in the 2010 Hong Kong film Bruce Lee, My Brother.