| Honorific-Prefix: | Sir |
| John Hayward | |
| Honorific-Suffix: | JP |
| Office: | High Sheriff of Montgomeryshire |
| Term Start: | 1632 |
| Term End: | 1633 |
| Constituency Mp2: | Saltash |
| Term Start2: | February 1626 |
| Term End2: | June 1626 |
| Office3: | High Sheriff of Kent |
| Term Start3: | 1623 |
| Term End3: | 1624 |
| Constituency Mp4: | Bridgnorth |
| Term Start4: | January 1621 |
| Term End4: | January 1622 |
| Birth Date: | 1591 |
| Birth Place: | London |
| Death Place: | Rochester, Kent |
| Restingplace: | St Alphege London Wall |
| Death Date: | 1636 |
| Nationality: | English |
| Spouse: | Anne Livesey (ca. 1624-his death) |
| Alma Mater: | Emmanuel College, Cambridge |
| Occupation: | Landowner and politician |
Sir John Hayward (c. 1591 – April 1636) was an English politician and landowner. He was MP for Bridgnorth in 1621 and for Saltash in 1626, as well as High Sheriff of Kent in 1623 and of Montgomeryshire in 1632.
John Hayward was born in 1591, second surviving son of Sir Rowland Hayward (1520-1593) and his second wife Catherine Smythe. Originally from an old Shropshire family, his father was a wealthy merchant and twice Lord Mayor of London.
In 1615, Hayward inherited his elder brother George's estates in Acton Burnell; around 1624, he moved to Hollingbourne in Kent and married his recently widowed cousin Anne, mother of Sir Michael Livesey, a regicide who approved the Execution of Charles I in January 1649. They had no children and when he died in 1636, he was buried next to his father in St Alphege London Wall. His will records him as being resident in Rochester, Kent.