William H. Osborne

William H. Osborne, better known as William Hamilton Osborne (1873–1942), was an American lawyer and author from Newark, New Jersey. He studied law, was admitted to the bar in the 1890s, and practiced in New York and New Jersey, later serving as counsel for the Authors League of America.

Alongside his legal career, he became a busy writer. He began publishing fiction in the early 1900s, with stories appearing in major magazines such as Harper’s Monthly, McClure’s, and The Saturday Evening Post. He also wrote novels and worked in early film, including screenwriting.

Osborne is remembered today both for his wide-ranging popular writing and for The History of the Twenty-Ninth Regiment of Massachusetts Volunteer Infantry, a detailed Civil War regimental history that has continued to be reprinted and read long after its original publication.