Robert Walker Macbeth (30 September 1848 in Glasgow – 1 November 1910 in London) was a Scottish painter, etcher and watercolourist, specialising in pastoral landscape and the rustic genre.
His father was the portrait painter Norman Macbeth and his niece Ann Macbeth.
Two of his five brothers, James Macbeth (1847–1891) and Henry Macbeth, later Macbeth-Raeburn (1860–1947), were also artists.