Austin Diamond (10 July 1874 – 5 August 1966) was a cricketer who played first-class cricket for New South Wales from 1899 to 1918, including 14 matches as captain.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Catches/St |
| FC | 35 | 1681 | 32.96 | 4/4 | 210 not out | 36/0 |
