Smallest victories by Tamil Union Cricket and Athletic Club in T20s
By runs
By wickets
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| 2 wickets | 0 | 130 | 20.0 | 20.0 | v Air Force SC | Welisara | 25 Feb 2018 | Twenty20 | |
| 2 wickets | 1 | 150 | 19.5 | 20.0 | v Singha SC | Colombo (Bloomfield) | 9 Oct 2005 | Twenty20 | |
| 4 wickets | 1 | 179 | 19.5 | 20.0 | v Sinhalese | Colombo (NCC) | 30 May 2023 | Twenty20 | |
| 2 wickets | 2 | 210 | 19.4 | 20.0 | v Chilaw CC | Colombo (NCC) | 20 Jan 2016 | Twenty20 | |
| 3 wickets | 7 | 179 | 18.5 | 20.0 | v Nondescripts | Colombo (RPS) | 23 Jan 2016 | Twenty20 | |
| 5 wickets | 7 | 188 | 18.5 | 20.0 | v Burgher | SLAOCIC Stadium | 19 Feb 2019 | Twenty20 | |
| 7 wickets | 8 | 177 | 18.4 | 20.0 | v SLPACC | Colombo (NCC) | 13 Jan 2016 | Twenty20 | |
| 2 wickets | 8 | 120 | 18.4 | 20.0 | v Bloomfield | Colombo (CCC) | 8 Jun 2025 | Twenty20 | |
| 3 wickets | 12 | 159 | 18.0 | 20.0 | v Moors | Colombo (Burgher) | 2 Mar 2007 | Twenty20 | |
| 6 wickets | 13 | 105 | 17.5 | 20.0 | v SL Army | Colombo (NCC) | 4 Mar 2021 | Twenty20 | |
| 8 wickets | 14 | 108 | 17.4 | 20.0 | v Police SC | Colombo (Colts) | 30 Oct 2005 | Twenty20 | |
| 6 wickets | 14 | 138 | 17.4 | 20.0 | v Negombo | Colombo (NCC) | 10 Jun 2022 | Twenty20 | |
| 7 wickets | 15 | 134 | 17.3 | 20.0 | v Sebast CAC | Colombo (CCC) | 16 Oct 2005 | Twenty20 | |
| 5 wickets | 17 | 173 | 17.1 | 20.0 | v Panadura | Colombo (Burgher) | 1 Mar 2007 | Twenty20 | |
| 5 wickets | 23 | 118 | 16.1 | 20.0 | v Saracens | Colombo (SSC) | 26 Mar 2012 | Twenty20 | |
| 7 wickets | 27 | 136 | 15.3 | 20.0 | v Lankan CC | Colombo (Bloomfield) | 24 Feb 2018 | Twenty20 | |
| 7 wickets | 31 | 141 | 14.5 | 20.0 | v SL Army | Colombo (Colts) | 1 Apr 2015 | Twenty20 | |
| 7 wickets | 31 | 121 | 14.5 | 20.0 | v Sebast CAC | Colombo (Colts) | 23 May 2022 | Twenty20 | |
| 9 wickets | 32 | 150 | 14.4 | 20.0 | v Ragama CC | Colombo (CCC) | 4 Mar 2018 | Twenty20 | |
| 7 wickets | 32 | 116 | 14.4 | 20.0 | v Panadura | Colombo (NCC) | 11 Mar 2021 | Twenty20 | |
| 10 wickets | 38 | 95 | 13.4 | 20.0 | v Kandy CCC | Moratuwa | 25 May 2022 | Twenty20 | |
| 7 wickets | 47 | 117 | 12.1 | 20.0 | v Lankan CC | Colombo (Burgher) | 28 Feb 2007 | Twenty20 | |
| 9 wickets | 57 | 132 | 10.3 | 20.0 | v Badureliya | Colombo (NCC) | 12 Jan 2016 | Twenty20 |
Tied matches
Team 1 | Team 2 | Ground | Match Date | Scorecard |
| Tamil Union | Galle CC | Chilaw Marians Cricket Club Ground, FTZ Sports Complex | 27 Feb 2018 | Twenty20 |
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