Teams and drivers
| Team | No. | Driver name | Status | Rounds |
|---|---|---|---|---|
 Lotus | 3 |  René Binder [3] | All | |
| 4 |  Pietro Fittipaldi [3] | All | ||
 SMP Racing with AVF [4] | 5 | Egor Orudzhev [5] | 1–8 | |
| Konstantin Tereshchenko [6] | R | 9 | ||
| 6 | Matevos Isaakyan [7] | All | ||
 Fortec Motorsports | 7 |  Alfonso Celis Jr. [8] | All | |
| 8 | Diego Menchaca [9] | R | All | |
 Teo Martín Motorsport | 9 | Konstantin Tereshchenko [10] | R | 1–8 |
| 10 |  Nelson Mason [11] | R | 1–5 | |
| Álex Palou [12] | R | 6–8 | ||
 RP Motorsport | 11 |  Roy Nissany [13] | All | |
| 12 |  Yu Kanamaru [14] | All | ||
| 21 | Damiano Fioravanti [15] | R | 2–6 | |
 Tatiana Calderón [16] | R | 9 | ||
| Il Barone Rampante [17] | 15 | Giuseppe Cipriani [17] | 1–8 | |
| 16 | Damiano Fioravanti [13] | R | 1 | |
| AVF | 17 |  Henrique Chaves [6] | R | 9 |
Driver changes
- Changed teams
- Alfonso Celis Jr. switched from AVF to Fortec Motorsports. [8]
- Pietro Fittipaldi, who raced for Fortec Motorsports moved to Lotus. [3]
- Matevos Isaakyan moved from SMP Racing to AVF. [7] He was joined in AVF by Egor Orudzhev, who left Arden Motorsport. [5]
- Yu Kanamaru, who raced for Teo Martín Motorsport moved to RP Motorsport. [14]
- Entering World Series Formula V8 3.5
- Euroformula Open Championship drivers Damiano Fioravanti and Diego Menchaca made their debut with Il Barone Rampante and Fortec Motorsports respectively. [13] [9]
- Nelson Mason returned to racing for the first time since 2014 as he joins the World Series with Teo Martín Motorsport. [11]
- Konstantin Tereshchenko stepped up from GP3 Series to race with Teo Martín Motorsport. [10]
- Leaving World Series Formula V8 3.5
- RP Motorsport driver Vitor Baptista returned to the Formula 3 Brasil championship.
- Fortec Motorsports driver and 2016 runner-up Louis Delétraz left the series to join the FIA Formula 2 Championship. [18]
- 2016 champion Tom Dillmann moved to Formula E. [19]
- Arden Motorsport driver Aurélien Panis will make his touring car racing debut in World Touring Car Championship. [20]
- SMP Racing driver Matthieu Vaxiviere switched to sports car racing, moving to FIA World Endurance Championship [21]
- Mid-season changes
- Damiano Fioravanti restored his collaboration with RP Motorsport, leaving the Barone Rampante team after the first round due to funding issues. [15] Fiorovanti's seat at RP Motorsport was taken by Tatiana Calderón, who will make her debut in the series in Bahrain. [16]
- Prior to the Nürburgring round, Nelson Mason was replaced (due to a lack of funding) by Spanish driver Álex Palou. [12]
- Prior to the Bahrain round, Egor Orudzhev was diagnosed with acute tonsillitis and was replaced by his fellow Russian Konstantin Tereshchenko. [6]
- Henrique Chaves joined AVF in their third car for the final round in Bahrain. [6]
Team changes
- Arden Motorsport, Comtec Racing and SMP Racing have left the series. However, both Comtec and the proposed Durango entry were listed on the World Series website with "TBC" driver names, suggesting they may enter at a later date. The Durango Racing Team entry was later bought by Giuseppe Cipriani, who entered his own team, Il Barone Rampante. [17]
