| John Wertheimer | |
| Birth Place: | London, Great Britain |
| Death Place: | London, United Kingdom |
| Occupation: | Printer |
John Wertheimer (1799 – 18 December 1883) was an English printer. He was senior member of the firm of Wertheimer, Lea & Co.
From 1820 until his death he was actively engaged as a printer in London; and many important educational, medical, and philological works were issued from his press. His firm printed most of the works needing Hebrew type, also commercial reports and The Jewish Chronicle.