Gabon
| Year | Electoral system family | Electoral system for national legislature | Number of tiers | Legislative size (directly elected) | Legislative size (voting members) | Electoral system for the president |
|---|---|---|---|---|---|---|
| 2025 | PR | TRS | 1 | 143 | 143 | TRS |
| 2023 | Plurality/Majority | TRS | 1 | 143 | 143 | TRS |
| 2018 | Plurality/Majority | TRS | 1 | 143 | 143 | TRS |
| 2011 | Plurality/Majority | TRS | 1 | 120 | 114 | FPTP |
| 2006 | Plurality/Majority | TRS | 1 | 120 | 120 | FPTP |
| 2001 | Plurality/Majority | TRS | 1 | 120 | 120 | TRS |
| 1996 | Plurality/Majority | TRS | 1 | 120 | 120 | TRS |
