David Robert O'Sullivan (born 16 November 1944) is a former New Zealand cricketer. A left-arm spin bowler, he played 11 Tests and three One Day Internationals for New Zealand between 1973 and 1976. He played first-class cricket from 1971 to 1985.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Wickets | Bowl Avg | Best Bowling | Catches/St |
| Test | 11 | 158 | 9.29 | 0/0 | 23* | 18 | 68.00 | 5/148 | 2/– |
| ODI | 3 | 2 | 2.00 | 0/0 | 1* | 2 | 61.50 | 1/38 | 0/– |
| FC | 136 | 2,174 | 15.41 | 0/3 | 70* | 523 | 25.91 | 6/26 | 46/– |
| LA | 53 | 261 | 10.87 | 0/30 | 32 | 56 | 26.83 | 4/13 | 12/– |
