William Henry Mark Paterson (24 September 1947 – 5 August 2022) was a New Zealand sailor.

Paterson was born in Auckland on 24 September 1947,[1] and began sailing at the Kohimarama Yacht Club when he was 10 years old.

[17] In 1978, Paterson and David Mackay won the Cherub World Championship, raced off Milford on Auckland's North Shore.

[18] In 1979, Paterson and Mackay won the 470 class at the rehearsal event for the 1980 Summer Olympics in Tallinn.

[4] Paterson worked as a pharmacist, and bought a pharmacy in the Auckland suburb of Meadowbank in 1988.