| Club: | Kirolbet Baskonia |
| Season: | 2019–20 |
| Chrtitle: | President |
| Chairman: | José Antonio Querejeta |
| Mgrtitle: | Head coach |
| Manager: | Duško Ivanović |
| Stadium: | Buesa Arena |
| League: | Liga ACB |
| League Result: | 8th |
| Playoffs Result: | Winners |
| League2: | EuroLeague |
| League2 Result: | 13th |
| Highest Attendance: | Liga ACB: 11,589 Baskonia 74–82 Burgos (22 December 2019) EuroLeague: 13,628 Baskonia 76–74 Barcelona (2 January 2020) |
| Lowest Attendance: | Liga ACB: 7,625 Baskonia 105–82 Estudiantes (27 September 2019) EuroLeague: 8,725 Baskonia 73–72 Berlin (6 March 2020) |
| Average Attendance: | Liga ACB: 8,931 EuroLeague: 10,661 |
| Largest Win: | Baskonia 93–60 Bayern (1 November 2019) |
| Largest Loss: | Panathinaikos 100–68 Baskonia (28 November 2019) |
| H Pattern B: | _baskonia1920h |
| H Pattern S: | _baskonia1819h |
| A Pattern B: | _baskonia1920a |
| A Pattern S: | _baskonia1920a |
| 3 Title: | Third |
| 3 Pattern B: | _baskonia1920x |
| 3 Pattern S: | _baskonia1920x |
| Prevseason: | 2018–19 |
| Nextseason: | 2020–21 |
The 2019–20 season was Kirolbet Baskonia's 61st in existence and the club's 38th consecutive season in the top flight of Spanish basketball and the 20th consecutive season in the EuroLeague. It was the second consecutive season under head coach Velimir Perasović, who signed in November 2018 and was replaced with Duško Ivanović in December 2019.
Times up to 26 October 2019 and from 29 March 2020 were CEST (UTC+2). Times from 27 October 2019 to 28 March 2020 were CET (UTC+1).
See also: List of 2019–20 EuroLeague transactions.
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