| Peter Rylands | |
| Birth Date: | 23 October 1868 |
| Father: | Peter Rylands |
| Relatives: | L. Gordon Rylands (brother) Dadie Rylands (nephew) |
Sir William Peter Rylands, 1st Baronet (23 October 1868 – 22 October 1948) was a British businessman.
Rylands was head of Rylands Brothers and served as High Sheriff of Cheshire in 1935. He was created a baronet, of Thelwall in the County Palatine of Chester, in 1939. He died in October 1948, one day before his eightieth birthday. The title died with him.