Robert Cecil may refer to:
Robert Cecil, 1st Earl of Salisbury (1563–1612), English administrator and politician, MP for Westminster, and for Hertfordshire Robert Cecil (1670–1716), member of parliament for Castle Rising, and for Wootton Basset Robert Cecil (Old Sarum MP) (died 1657), English politician Robert Cecil, 1st Viscount Cecil of Chelwood (1864–1958) British lawyer, politician and diplomat Robert Cecil (diplomat, born 1913) (1913–1994), British diplomat and writer
See also Cecil Roberts (disambiguation) Robert Gascoyne-Cecil (disambiguation)