Robert Bruce McCoy (September 5, 1867 – January 5, 1926) was an American lawyer and Army National Guard officer in the early 20th century.

Not long after his birth his family moved to the town of Lafayette, in Monroe County, where his father worked in the milling industry.

Following his Spanish–American War service McCoy decided to take the lead in creating a post near Sparta which would be suitable for training Artillery units.

He began by buying small tracts and leasing them for grazing, with the proceeds going to finance additional land purchases.

In November of that year the Army National Guard post he worked to create was renamed to Fort McCoy in his honor.