| Age | 78 (age at death) |
| Birthday | 27 February, 1871 |
| Died | 12 May, 1949 |
| Zodiac Sign | Pisces |
| Nationality | British |
Sir John Alexander Hammerton (27 February 1871, in Alexandria, Scotland – 12 May 1949, in London) is described by the Dictionary of National Biography as "the most successful creator of large-scale works of reference that Britain has known".
