Mayfield is a north-western suburb of Newcastle, New South Wales, which takes its name from Ada May (born 1874) a daughter of the landowner there, John Scholey.

In 1938 an Act of the New South Wales Parliament created a "City of Greater Newcastle", incorporating 11 municipalities into one local government area, including Waratah.

Mayfield was originally a pleasant garden suburb on the outskirts of Newcastle, and by 1901 contained a Roman Catholic monastery, and several fine Victorian mansions belonging to prominent businessmen and lawyers, including N.B.

Charles Upfold (Soap Manufacturer) built a large mansion on a piece of land in Crebert Street, North Waratah (now called Mayfield), given to him by his friend Scholey.

The advantages of the site played a major part in this decision: for transport both rail and shipping already existed, and they had close proximity to the Newcastle and South Maitland coalfields, (the coal consumption in 1947 was 30,000 tons each week).

A large proportion of the Steel Works closed down in September 1999 which had a knock on effect with adjacent industries, several of whom were now struggling with developing world markets.