Robert Morris Washburn (1868–1946) was an American politician and writer who served in the Massachusetts General Court and wrote a newspaper column and a number of biographies on Massachusetts politicians, including Calvin Coolidge.

[1] His older brother, Charles G. Washburn, was a member of the United States House of Representatives.

In 1922 Washburn helped establish the Roosevelt Club of Massachusetts and served as its president for many years.

He finished in third place with 14% of the vote to Republican Alvan T. Fuller's 54% and Democrat Marcus A. Coolidge's 29%.

[9] In 1928, Washburn was a candidate for the United States Senate seat held by David I. Walsh.

However he dropped out of the race on July 25 so that he could "take the stump" for fellow candidate Butler Ames.