William Maving Gardner was an English coin designer, engraver, calligrapher and writer who worked regularly for the Royal Mint over a 30-year period. He is notable for designing coins such as the British 20 Pence Coin. Apart from the United Kingdom, he also designed coins for Cyprus, New Zealand, Jordan, Guyana, Dominican Republic, Sri Lanka and the Falkland Islands.
In 1963 Gardner was visiting professor and fine art program lecturer at Colorado State University and in the years immediately following he travelled widely to research art and crafts of the United States, Polynesia, New Zealand, Australia and Nepal.
William Gardner was a Fellow of the Society of Scribes and Illuminators and a Fellow of the Society of Numismatic Artists and Designers.