William David Grafton Loudon (born 22 May 1954) is a Scottish former cricketer.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Wickets | Bowl Avg | Best Bowling | Catches/St |
| First-class | 1 | 21 | 21.00 | –/– | 21 | 3 | 3.66 | 3/4 | 1/– |
| List A | 6 | 78 | 15.60 | –/– | 22 | 2 | 92.00 | 1/32 | 1/– |
