Smallest victories by New South Wales in T20s
By runs
Winner | Margin | Balls Rem | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 2 runs | 0 | 129 | 20.0 | v Victoria | Sydney | 17 Jan 2009 | Twenty20 | |
| 6 runs | 0 | 122 | 20.0 | v Queensland | Sydney | 8 Jan 2008 | Twenty20 | |
| 17 runs | 0 | 169 | 20.0 | v Victoria | Melbourne | 22 Jan 2011 | Twenty20 | |
| 17 runs | 0 | 141 | 20.0 | v Queensland | Brisbane | 24 Jan 2011 | Twenty20 | |
| 21 runs | 0 | 169 | 17.2 | v South Aust | Adelaide | 4 Jan 2011 | Twenty20 | |
| 31 runs | 0 | 195 | 19.0 | v Tasmania | Hobart | 30 Dec 2009 | Twenty20 | |
| 35 runs | 0 | 131 | 20.0 | v Sussex | Delhi | 11 Oct 2009 | Twenty20 | |
| 41 runs | 0 | 160 | 15.5 | v Trinidad & T | Hyderabad | 23 Oct 2009 | Twenty20 | |
| 46 runs | 0 | 202 | 18.5 | v CSK | Chennai | 4 Oct 2011 | Twenty20 | |
| 53 runs | 0 | 145 | 20.0 | v Eagles | Delhi | 9 Oct 2009 | Twenty20 | |
| 69 runs | 0 | 189 | 17.3 | v Tasmania | Hobart | 10 Jan 2006 | Twenty20 | |
| 79 runs | 0 | 170 | 20.0 | v Victoria | Delhi | 21 Oct 2009 | Twenty20 |
By wickets
Winner | Margin | Balls Rem | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 4 wickets | 10 | 161 | 18.2 | v South Aust | Adelaide | 6 Jan 2009 | Twenty20 | |
| 5 wickets | 12 | 168 | 18.0 | v Queensland | North Sydney | 8 Jan 2006 | Twenty20 | |
| 5 wickets | 2 | 162 | 19.4 | v Queensland | Brisbane | 26 Dec 2008 | Twenty20 | |
| 5 wickets | 0 | 167 | 20.0 | v Victoria | Sydney | 24 Jan 2009 | Twenty20 | |
| 5 wickets | 18 | 101 | 17.0 | v MI | Chennai | 2 Oct 2011 | Twenty20 | |
| 6 wickets | 49 | 112 | 11.5 | v Somerset | Hyderabad | 18 Oct 2009 | Twenty20 | |
| 8 wickets | 18 | 135 | 17.0 | v South Aust | Adelaide | 1 Jan 2008 | Twenty20 | |
| 8 wickets | 68 | 82 | 8.4 | v South Aust | Sydney | 17 Jan 2010 | Twenty20 | |
| 9 wickets | 25 | 104 | 12.5 | v Tasmania | Hobart | 1 Feb 2011 | Twenty20 |
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| 5 wickets | 0 | 167 | 20.0 | 20.0 | v Victoria | Sydney | 24 Jan 2009 | Twenty20 | |
| 5 wickets | 2 | 162 | 19.4 | 20.0 | v Queensland | Brisbane | 26 Dec 2008 | Twenty20 | |
| 4 wickets | 10 | 161 | 18.2 | 20.0 | v South Aust | Adelaide | 6 Jan 2009 | Twenty20 | |
| 5 wickets | 12 | 168 | 18.0 | 20.0 | v Queensland | North Sydney | 8 Jan 2006 | Twenty20 | |
| 8 wickets | 18 | 135 | 17.0 | 20.0 | v South Aust | Adelaide | 1 Jan 2008 | Twenty20 | |
| 5 wickets | 18 | 101 | 17.0 | 20.0 | v MI | Chennai | 2 Oct 2011 | Twenty20 | |
| 9 wickets | 25 | 104 | 12.5 | 17.0 | v Tasmania | Hobart | 1 Feb 2011 | Twenty20 | |
| 6 wickets | 49 | 112 | 11.5 | 20.0 | v Somerset | Hyderabad | 18 Oct 2009 | Twenty20 | |
| 8 wickets | 68 | 82 | 8.4 | 20.0 | v South Aust | Sydney | 17 Jan 2010 | Twenty20 |
Tied matches
Team 1 | Team 2 | Ground | Match Date | Scorecard |
| NSW | Trinidad & T | MA Chidambaram Stadium, Chepauk, Chennai | 28 Sep 2011 | Twenty20 |
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