| No | Entrant | Races | Active Years |
|---|
| 648 | Sachs Racing | 4 |
1978 |
| 649 | Sahara Force India F1 Team | 130 |
2012–2018 |
| 650 | Sam Tingle | 3 |
1963, 1965, 1967 |
| 651 | Sampson Manufacturing Co (Indy only) | 1 |
1950 |
| 652 | Samson Shadow Racing Team | 15 |
1979 |
| 653 | Samuel W. Traylor III (Indy only) | 2 |
1955–1956 |
| 654 | Sasol Jordan | 32 |
1993–1994 |
| 655 | Sasol Jordan Yamaha | 16 |
1992 |
| 656 | Sauber | 16 |
1993 |
| 657 | Sauber F1 Team | 137 |
2011–2017 |
| 658 | Sauber Mercedes | 16 |
1994 |
| 659 | Sauber Petronas | 70 |
2002–2005 |
| 660 | Scirocco Powell Racing Cars | 5 |
1963 |
| 661 | SCM Minardi Team | 16 |
1990 |
| 662 | Scribante Lucky Strike Racing | 6 |
1972–1974 |
| 663 | Scuderia Achille Varzi | 3 |
1950 |
| 664 | Scuderia AlphaTauri | 44 |
2022–2023 |
| 665 | Scuderia AlphaTauri Honda | 39 |
2020–2021 |
| 666 | Scuderia Ambrosiana | 6 |
1950–1951, 1954 |
| 667 | Scuderia Centro Sud | 49 |
1956–1961, 1963–1965 |
| 668 | Scuderia Colonia | 7 |
1960–1961 |
| 669 | Scuderia de Tomaso | 1 |
1962 |
| 670 | Scuderia Eugenio Castellotti | 4 |
1960 |
| 671 | Scuderia Ferrari | 384 |
1950–1960, 1993–1996, 2012–2020, 2022–2024 |
| 672 | Scuderia Ferrari HP | 21 |
2025 |
| 673 | Scuderia Ferrari Marlboro | 261 |
1997–2011 |
| 674 | Scuderia Ferrari Mission Winnow | 5 |
2019 |
| 675 | Scuderia Ferrari SpA | 48 |
1990–1992 |
| 676 | Scuderia Ferrari SpA SEFAC | 373 |
1961–1989 |
| 677 | Scuderia Finotto | 4 |
1974 |
| 678 | Scuderia Franera | 4 |
1952 |
| 679 | Scuderia Guastalla | 2 |
1956 |
| 680 | Scuderia Gulf Rondini | 4 |
1976 |
| 681 | Scuderia Jolly Club | 1 |
1962 |
| 682 | Scuderia Lancia | 4 |
1954–1955 |
| 683 | Scuderia Lupini | 1 |
1963 |
| 684 | Scuderia Marzotto | 2 |
1952 |
| 685 | Scuderia Milano | 6 |
1950–1951, 1953 |
| 686 | Scuderia Mission Winnow Ferrari | 22 |
2021 |
| 687 | Scuderia Sant'Ambroeus | 2 |
1961 |
| 688 | Scuderia Scribante | 4 |
1965, 1967–1968, 1970 |
| 689 | Scuderia Serenissima | 5 |
1961 |
| 690 | Scuderia Settecolli | 3 |
1961–1963 |
| 691 | Scuderia SSS Republica di Venezia | 3 |
1962 |
| 692 | Scuderia Sud Americana | 1 |
1958 |
| 693 | Scuderia Toro Rosso | 226 |
2006–2017 |
| 694 | Scuderia Ugolini | 2 |
1959 |
| 695 | Scuderia Volpini | 1 |
1955 |
| 696 | Selby Auto Spares | 1 |
1963 |
| 697 | Shadow Cars | 5 |
1980 |
| 698 | Shadow Racing Team | 47 |
1976–1978 |
| 699 | Shadow Racing with Tabatip | 2 |
1976 |
| 700 | Shannon Bros (Indy only) | 1 |
1956 |
| 701 | Shell Arnold | 1 |
1971 |
| 702 | Shellsport/Whiting | 1 |
1976 |
| 703 | Siffert Racing Team | 17 |
1963–1964 |
| 704 | Silvio Moser Racing Team | 12 |
1969–1970 |
| 705 | Sir Jeremy Boles | 1 |
1954 |
| 706 | Skoal Bandit Formula 1 Team | 30 |
1984–1985 |
| 707 | Skol Fittipaldi Team | 14 |
1980 |
| 708 | South California Muffler Co (Indy only) | 2 |
1954–1955 |
| 709 | Spirit Enterprises Ltd | 3 |
1985 |
| 710 | Spirit Racing | 22 |
1983–1984 |
| 711 | SportPesa Racing Point F1 Team | 21 |
2019 |
| 712 | Sports Cars of Austria | 1 |
1976 |
| 713 | Spyker F1 Team | 17 |
2007 |
| 714 | Spyker MF1 Racing | 3 |
2006 |
| 715 | Stake F1 Team Kick Sauber | 22 |
2024 |
| 716 | Stanley BRM | 15 |
1975–1977 |
| 717 | Stichting Autoraces Nederland | 1 |
1971 |
| 718 | Stirling Moss Ltd | 5 |
1955 |
| 719 | STP Corporation | 5 |
1970 |
| 720 | STP March Racing Team | 33 |
1971–1973 |
| 721 | Subaru Coloni Racing | 8 |
1990 |
| 722 | Super Aguri F1 | 18 |
2006 |
| 723 | Super Aguri F1 Team | 21 |
2007–2008 |
