John Garrard (c. 1546–1625) was a merchant and Lord Mayor of London for 1602–03.
John Garrard may also refer to:
- Sir John Garrard, 1st Baronet (c. 1590–1637), of the Garrard baronets
- Sir John Garrard, 2nd Baronet (died 1686), of the Garrard baronets
- Sir John Garrard, 3rd Baronet (1638–1701), member of parliament for Amersham and Ludgershall