2019–20 CSA 4-Day Franchise Series
| Dates | 7 October 2019 – 8 April 2020 |
|---|---|
| Administrator(s) | Cricket South Africa |
| Cricket format | First-class |
| Tournament format(s) | Double round-robin |
| Champions | Lions (3rd title) |
| Participants | 6 |
| Matches | 30 |
| Most runs | Raynard van Tonder (843) |
| Most wickets | Prenelan Subrayen (38) |
The 2019–20 CSA 4-Day Franchise Series was a first-class cricket competition that took place in South Africa from October 2019 to April 2020. Lions were the defending champions.
On 16 March 2020, Cricket South Africa suspended all cricket in the country for 60 days due to the COVID-19 pandemic. On 24 March 2020, Lions were named as the winners of the tournament, following the recommendations of Graeme Smith, the acting Director of Cricket.