William Smith Haig (6 April 1921 – 21 August 1967) was a New Zealand cricketer. He played 31 first-class matches, almost all of them for Otago between the 1949–50 and 1957–58 seasons.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Wickets | Bowl Avg | Best Bowling | Catches/St |
| First-class | 31 | 1,062 | 19.30 | 1/6 | 102 | 15 | 23.66 | 4/12 | 18/– |
