William Mark Young (1881–1946) was an American painter and commercial artist, known for his murals and book illustrations.

[1] He established a commercial arts business in St. Louis, before relocating to Chicago.

[3] He painted fifteen murals—relocated subsequently to the Ohio Statehouse—for the Ohio State Exhibit at the 1933 A Century of Progress International Exposition, (also known as the Chicago World's Fair),[1][4][5] and made paintings of other exhibits there.

In 1937 he created a set of twelve murals for the walls of the new City Hall in Marietta, Ohio, as part of the celebration of the 150th Anniversary of the Ordinance of 1787 and the sesquicentennial (150th anniversary) of the establishment of Marietta in 1788.

[6][3] Among the books he illustrated was a 1939 edition of Charles Dickens's A Christmas Carol.