Robert Semple may refer to:Robert Sample, or Semple, pirate who left Edward England to sail the Caribbean Robert Semple (activist) (1841–1920), Scottish poet and temperance activist Robert Semple (1777–1816), governor of the Red River Colony in Canada Robert Semple (1887–1943), Medal of Honor recipient Robert B. Semple (1806–1854), California newspaperman and politician, who helped found Benicia, California Robert B. Semple Jr., 1996 Pulitzer Prize winning journalist and editor Bob Semple (1873–1955), New Zealand politician Robert James Semple, Irish missionary, first husband of Aimee Semple McPherson