Samuel Swett Green (February 20, 1837 – December 8, 1918) was an American librarian.

A few years later, he attended Harvard Divinity School but did not graduate until 1864 due to health issues.

[1] As director, Green focused primarily on the technical aspects of librarianship.

He also instituted an interlibrary loan system and a lending collection of artwork.

[4] Green was elected a member of the American Antiquarian Society in 1880.