Thomas Douglas Baird Hay (31 August 1876 – 19 April 1967) was a New Zealand cricketer who played first-class cricket for Auckland from 1893 to 1907. He was later a cricket administrator and a prominent Auckland sharebroker.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Wickets | Bowl Avg | Best Bowling | Catches/St |
| First-class | 25 | 689 | 16.02 | 1/2 | 144 | 19 | 23.36 | 5/10 | 9/– |
