William Lewis Douglas, American businessman and politician, 42nd Governor of Massachusetts (died 1924)

William Lewis Douglas was an American businessman and politician from Massachusetts. He served as the 42nd governor of Massachusetts from 1905 until 1906. He also founded and oversaw the growth of the W. L. Douglas Shoe Company, a highly successful Brockton, Massachusetts, business that became one of the world's largest shoe manufacturers. He also opened the first nationwide chain of shoe stores devoted to selling the company's products.

The governor of the Commonwealth of Massachusetts is the head of government of the Commonwealth of Massachusetts. The governor is the head of the state cabinet and the commander-in-chief of the commonwealth's military forces.