William James Maxwell (ca.1843 – 20 July 1903) was a sculptor born in Scotland who produced several important works in Australia.
Maxwell was the son of builder Francis Maxwell and his wife Jane Young Maxwell in Largs, Ayrshire, Scotland, where he received an education. After fifteen years living in Glasgow and London he emigrated to Australia, arriving in Melbourne in 1875, and subsequently to Adelaide, South Australia. He returned to England, expecting to re-settle there but, finding the weather oppressive, returned to Adelaide around 1890.
Maxwell was a member of H. P. Gill's exclusive but short-lived Adelaide Art Circle 1891–1892. He must have had some talents as an entertainer, as most meetings ended with him giving some kind of rendition.
He had a home at Kent Town for some time, then built a magnificent residence, "Woodlands", Edwardstown, where he died.

He married Isabella Strachan (1844? 1845? – 28 February 1914); their children included:
They had a home at College Road, Kent Town, then "Woodlands", in Edwardstown, South Australia. He had a sister, Mrs. George Finnister of Adelaide.