William Manley German (May 25, 1851 – March 31, 1933) was an Ontario barrister and political figure.

He represented Welland in the Legislative Assembly of Ontario from 1894 to 1900 and in the House of Commons of Canada from 1891 to 1892, from 1900 to 1917 and from 1921 to 1925 as a Liberal member.

He was born in Hillier Township, Prince Edward County, Canada West, the son of George German whose parents were United Empire Loyalists from New York state.

German articled in law with Lewis Wallbridge in Belleville and then Edward Fitzgerald in Toronto.

German introduced legislation in the House of Commons to establish a bridge commission which led to the construction of the Peace Bridge between Fort Erie, Ontario and Buffalo, New York; similar legislation had been introduced in the United States Congress and the New York State Legislature.