James Muir Auld (19 June 1879 – 8 June 1942) was an Australian artist. His works are signed J. Muir Auld. Auld was born in Ashfield, New South Wales, third son of Presbyterian minister, Reverend John Auld (–1912) and his wife, Georgina née Muir. Auld attended Ashfield Public School and later, Sydney Grammar School. He worked as a clerk for the Ashfield Borough Council and enrolled in night classes in drawing at Ashfield Technical School. He spent spare time drawing and sketching the foreshores of Sydney Harbour.