Walter John James, 3rd Baron Northbourne RBA (2 September 1869 – 22 December 1932), was an English painter, etcher, and hereditary peer.
He is the son of Walter James, 2nd Baron Northbourne, and his wife Edith Lane.
He studied etching under Sir Frank Short at the Royal College of Art.
Upon his father's death on 27 January 1923, he inherited the family title and estates.
They had four daughters, and one son, Walter James, 4th Baron Northbourne.