Elizabeth Manners, 16th Baroness de Ros (January 1574/75 - May 1, 1591) was the daughter and heir of Edward Manners, 3rd Earl of Rutland. On her father's death the Earldom of Rutland devolved upon his brother, and the Barony of Ros passed to his daughter, Elizabeth.

In January 1589, she married William Cecil, 2nd Earl of Exeter. She died in childbirth, in London, at Tower Street, All Hallows, Barking and was buried in Westminster Abbey. She was succeeded in the Barony of Ros by her son, William.

Their child was:

• Sir William Cecil, 17th Baron de Ros

Other children of William Cecil were:

• Elizabeth Cecil
• Diana Cecil
• Anne Cecil