William Fiennes, 1st Viscount Saye and Sele
| The Viscount Saye and Sele | |
|---|---|
| Engraving of Lord Saye by Wenceslas Hollar, mid-seventeenth century. | |
| Born | 28 June 1582 | 
| Died | 14 April 1662 (aged 79) | 
| Burial place | Broughton, Oxfordshire | 
| Spouse | Elizabeth Temple of Stowe | 
| Children | James Fiennes, 2nd Viscount Saye and Sele Nathaniel Fiennes John Fiennes Bridget Clinton, Countess of Lincoln | 
| Parent(s) | Richard Fiennes, 7th Baron Saye and Sele, Constance Kingsmill | 
William Fiennes, 1st Viscount Saye and Sele (28 June 1582 – 14 April 1662) was an English nobleman and politician. He was a leading critic of Charles I's rule during the 1620s and 1630s. He was known also for his involvement in several companies for setting up overseas colonies.