Leo Weiser Port MBE (7 September 1922 – 26 August 1978) was an Australian businessman, engineer, television personality, and Lord Mayor of Sydney from 1975 until his sudden death in 1978.

Leo Weiser Rapoport was born in Kraków, Poland in 1922 to Jewish parents.

At that time his father and brother changed their surname to "Port", and Leo did likewise.

Port was an advocate of civic design, and was partly responsible for the pedestrianisation of Martin Place and Sydney Square.

[3] At Port's funeral, Rabbi Raymond Apple of the Great Synagogue, Sydney, described Port as a person with "remarkable capacities", possessing a "strong character, resourceful mind, generous heart, broad vision, quick imagination, and tireless industry".