Joshua Danforth Bush (December 4, 1868 – December 4, 1926)^[1] was an American businessman and Republican Party politician who served as the sixth Lieutenant Governor of Delaware, from January 18, 1921, to January 20, 1925, under Governor William D. Denney.^[2] He resided in Wilmington, Delaware.

Bush was also a wealthy businessman, as a member of one of Delaware's more prominent families. His father, George W. Bush, had inherited the family shipping business from his own father and had expanded it to include a large business in anthracite, coal, and even yellow pine lumber. The company, George W. Bush & Sons, eventually passed the lumber business to J. Danforth Bush's firm, a partnership with Robert B. Rayner. Bush also took on a large role in his father's company. After George W. Bush died in 1900, his sons incorporated their coal and transportation business as the George W. Bush & Sons Company. J. Danforth Bush was made vice president of the company.^[3]

Bush was a prominent member of the Delaware Game Protective Association, at one time serving as that organization's vice president for New Castle County.^[4] He also served as treasurer^[5] and secretary^[6] at various times.