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| Period | Name | Teams | Countries |
|---|---|---|---|
| 1996–2005 | Super 12 | 12 | Australia, New Zealand, South Africa |
| 2006–2010 | Super 14 | 14 | |
| 2011–2015 | Super Rugby | 15 | |
| 2016–2017 | 18 | Argentina, Australia, Japan, New Zealand, South Africa | |
| 2018–2020 | 15 | ||
| 2020 | Super Rugby (AU, NZ, SA) |
17 | Australia, New Zealand, South Africa |
| 2021 | Super Rugby (AU, NZ, TT) |
10 | Australia, New Zealand |
| 2022–2024 | Super Rugby Pacific | 12 | Australia, Fiji, New Zealand, Pacific Islands |
| 2025– | 11 |