Francis Manners Rutland, 6th Earl of Rutland (1578-1632), was an English nobleman. He was also the eighteenth Baron de Ros.

He married twice: first, in 1604, Countess Frances, a widow and the daughter of Sir Edward Knyvett . She bore him a daughter, Katherine, who became the Duchess of Buckingham, and died in 1608.

His second wife, Countess Cecilia, also a widow, was the daughter of Sir John Tufton . She married the Earl in 1608 and had two sons, Henry and Francis.

He lived at Belvoir Castle in Lincolnshire. In 1618, three women who worked at his castle were executed for witchcraft, having supposedly caused the premature deaths of his sons.