| Silviu Maniu | 2 | 3.5Medium |
| Simanta Mitra | 1 | 4.6Medium |
| Simen Hornnes | 3 | 6Hard |
| Simon Klein | 1 | 5.9Hard |
| Simon Lindholm | 33 | 6.9Hard |
| Sondre Sortland | 4 | 5.5Hard |
| Sonny Chan | 6 | 5.1Medium |
| Spencer Pao | 1 | 1.8Easy |
| Sri Vangaru | 1 | 5.8Hard |
| Stefan Büttcher | 3 | 4.7Medium |
| Stefan Kraus | 1 | 3.3Medium |
| Stefan Pszczolkowski | 1 | 2.1Easy |
| Stefan Toman | 1 | 2Easy |
| Stein Norheim | 7 | 5.7Hard |
| Steph Cheng | 1 | 7.6Hard |
| Sterling Larson | 1 | 5.7Hard |
| Sterling Smith | 1 | 2Easy |
| Steven Halim | 24 | 4.7Medium |
| Steven Wijaya | 2 | 7.2Hard |
| Steven Zeil | 11 | 5Medium |
| Stjepan Glavina | 2 | 5.3Medium |
| Stjepan Požgaj | 1 | 5.6Hard |
| Stuart Hansen | 1 | 3.1Medium |
| Suhas Nagar | 22 | 6.5Hard |
| Suhendry Effendy | 1 | 1.4Easy |
| Sumner Evans | 18 | 2.5Easy |
| Suraj Vathsa | 2 | 4.6Medium |
| Surya Subbarao | 3 | 6.1Hard |
| Svetoslav Tzvetkov | 1 | 7.7Hard |
| Swen Gaudl | 1 | 6.5Hard |
| Synopsys | 3 | 4.7Medium |
| Syx Pek | 7 | 5.9Hard |
| Sérgio Crisóstomo | 2 | 4Medium |
| T.J. Nickerson | 1 | 5.5Hard |
| Tan Jun An | 2 | 3.4Medium |
| Tanner Hoke | 1 | 3.2Medium |
| Taylor Wong | 11 | 5.4Medium |
| Teow Hua Jun | 10 | 6.9Hard |
| Thang Cao | 1 | 5.9Hard |
| The 2023 ICPC World Finals judges | 1 | 7.1Hard |
| Theodor Beskow | 3 | 6Hard |
| Thierry Lavoie | 3 | 4.7Medium |
| Thijs van Ommen | 1 | 8.1Hard |
| Thomas Beuman | 6 | 6.9Hard |
| Thomasz Idziaszek | 1 | 4.9Medium |
| Thor Eriksen | 1 | 9.1Hard |
| Thore Husfeldt | 56 | 4Medium |
| Tia Shi Wei | 1 | 8.1Hard |
| Timon Knigge | 27 | 5Medium |
| Tobias Lenz | 1 | 6.6Hard |
| Tobias Meyer Andersen | 5 | 5Medium |
| Tobias Roehr | 2 | 6.2Hard |
| Tobias Werth | 6 | 3.9Medium |
| Tolga Can | 1 | 4.6Medium |
| Tom Fuller | 1 | 1.8Easy |
| Tom Helmuth | 3 | 5.3Medium |
| Tom Rokicki | 2 | 5.3Medium |
| Tom Verhoeff | 1 | 2.2Easy |
| Tomas Rokicki | 5 | 3.8Medium |
| Tommy Ayers | 1 | 3.8Medium |
| Tommy Färnqvist | 3 | 4.1Medium |
| Tonko Sabolčec | 1 | 3.1Medium |
| Tony Cai | 12 | 4.6Medium |
| Tony Xia | 4 | 2.1Easy |
| Torbjørn Morland | 21 | 4.7Medium |
| Tori Mannarelli | 2 | 4.6Medium |
| Torstein Strømme | 33 | 4.3Medium |
| Travis Meade | 10 | 5.7Hard |
| Troels Bjerre Lund | 3 | 6.1Hard |
| Troy Vasiga | 3 | 3.7Medium |
| Truls A. Björklund | 1 | 1.8Easy |
| Truls Amundsen Bjørklund | 1 | 1.5Easy |
| Tung Kam Chuen | 10 | 6Hard |
| Tung Nguyen | 4 | 6.7Hard |
| Tylan McKinney | 1 | 5.5Hard |
| Tähvend Uustalu | 1 | 6.5Hard |
| Tómas Ken Magnússon | 8 | 3.6Medium |
| Ulf Lundström | 23 | 4.5Medium |
| Ulle Endriss | 1 | 4.9Medium |
| Umberto Gherardi | 1 | 2.6Easy |
| University of Dallas | 1 | 4.7Medium |
| University of Wroclaw | 1 | 7.5Hard |
| Unknown | 1 | 7.2Hard |
| Unnar Freyr Erlendsson | 27 | 3.7Medium |
| Vaibhav Tulsyan | 1 | 3.9Medium |
| Vamsi Manne | 1 | 2.4Easy |
| Vegard Itland | 4 | 2.9Medium |
| Vegard Sjonfjell | 2 | 3.9Medium |
| Victor Loh Bo Huai | 1 | 6.7Hard |
| Victor Sellstedt | 2 | 7.6Hard |
| Victor Song | 5 | 4.5Medium |
| Viktor Kozhuharov | 1 | 9.7Hard |
| Vinh Pham | 1 | 6.5Hard |
| Vitaly Aksenov | 1 | 3.3Medium |
| Vladimir Valyukh | 3 | 6.9Hard |
| Vlado Keselj | 1 | 6.9Hard |
| Volodymyr Lyubinets | 6 | 5.3Medium |
| Vuong Hoang Long | 4 | 5.8Hard |
| Vytautas Gruslys | 2 | 6.7Hard |
| Walter Guttmann | 4 | 5.2Medium |
