Alun Leach-Jones (1937–2017) was a British-born Australian artist renowned as one of the country’s most prominent abstract artists. Born in Maghull, Lancashire, England, he spent his childhood in Glasfryn, North Wales, where he did not speak English until age ten. He began his artistic journey at 14, working as a painter of illuminated manuscripts for the Solicitors Law Society in Liverpool. After studying at Liverpool College of Art (1955–1957), he emigrated to Australia in 1960, enrolling at the South Australian School of Art under influential teachers like Udo Sellbach.

Leach-Jones became a central figure in the "New Abstraction" movement in Australian art. His early work, particularly the Noumenon series—characterized by hard-edged, intricately patterned abstract forms—gained acclaim in the 1960s. He exhibited in the landmark 1968 The Field exhibition at the National Gallery of Victoria and represented Australia at the 1969 São Paulo Biennial. His career spanned over five decades, with more than 80 solo exhibitions and a significant body of work across painting, screen printing, drawing, and sculpture.

He was a dedicated educator, teaching at Prahran College of Advanced Education, the Victorian College of the Arts, and the UNSW College of Fine Arts from 1978 to 1997, where he mentored generations of Australian artists. His work is held in major international collections, including the Museum of Modern Art and Solomon R. Guggenheim Museum in New York, the British Museum and Victoria and Albert Museum in London, and the National Gallery of Australia.