William Jabez Muckley (March 23, 1829 – August 30, 1905) was a noted English artist who was born at Wordsley, Kingswinford, in Staffordshire.
After the Richardson glass firm was declared insolvent in 1852 Muckley joined the Birmingham School of Art.
In 1878 he wrote The Student's Manual of Artistic Anatomy, with 25 plates of the bones and surface muscles of the human figure, together with a description of the origin, insertion and use of the muscles, and in 1882 wrote A Handbook for Painters and Art Students about the character, nature and use of colours, their permanent or fugitive qualities and the proper vehicles to employ, also short remarks on the practice of painting in oil and water colours, and wrote two other books.
Muckley's father Jabez was at various times a glasscutter, a glassworks manager and a glass importer.
A nephew, Louis Fairfax Muckley (1862–1926), also illustrated books, most notably the 1897 Dent edition of The Faerie Queene by Edmund Spenser.