Arthur Knight Wallace (25 December 1879 – 21 August 1952) was an Australian politician.
He was born in Yacka to storekeeper Andrew Wallace and Eliza Hodge and grew up in the Mallee and gin Gippsland.
He served in the Second Boer War and after his return became a member of the Victorian Socialist Party.
He became president of the Carpenters' Union and served on South Melbourne City Council from 1928 to 1937 (mayor 1933–34).
In 1919 he won a by-election for the Victorian Legislative Assembly seat of Albert Park, representing the Labor Party.