II Iberoamericano Online – 1ª Ronda
Los horarios de los encuentros son en hora de Madrid, España (GMT+2).
| País | Jugador | FIDE | Resultado | País | Jugador | FIDE | Día | Hora | Partidas | Vídeo |
 | GM Forcen, Daniel | 2558 | 5-2 | | GM Henderson, Lance | 2491 | 01/06/2021 | 20:00 |  |  |
 | GM Cordova, Emilio | 2590 | 4,5-0,5 | | IM Suarez, Julio | 2449 | 02/06/2021 | 20:00 | | |
| GM Anton, David | 2673 | 5-0 |  | WGM Linares, Oleiny | 2255 | 02/06/2021 | 21:30 | | |
| GM Quesada, Luis Ernesto | 2545 | 5-1 |  | GM Gallego, Andres Felipe | 2512 | 03/06/2021 | 14:30 | | |
| GM Santos, Miguel | 2594 | 5-1 | | IM Tejedor, Enrique | 2440 | 03/06/2021 | 17:00 | | |
 | GM Pichot, Alan | 2630 | 4,5-0,5 | | WIM Forgas, Yaniela | 2310 | 03/06/2021 | 20:00 | | |
| GM Martinez, Jose Eduardo | 2620 | 5-0 | | IM Ordaz, Lisandra Teresa | 2369 | 05/06/2021 | 18:00 | | |
 | GM Fier, Alexandr | 2569 | 5-0 |  | GM Cubas, Jose Fernando | 2469 | 05/06/2021 | 20:00 | | |
| GM Bacallao, Yusnel | 2590 | 5-1 | | GM Larino, David | 2455 | 06/06/2021 | 20:00 | | |
| GM Cori, Jorge | 2652 | 4,5-1,5 | | FM Eizaguerri, Maria | 2308 | 06/06/2021 | 22:00 | | |
| GM Cruz, Cristhian | 2581 | 4,5-1,5 | | IM Diaz, Michel Alejandro | 2459 | 07/06/2021 | 18:00 | | |
| GM Tristan, Leonardo | 2535 | 4,5-3,5 | | GM Martinez, Lelys Stanley | 2520 | 07/06/2021 | 19:30 | | |
| GM Krysa, Leandro | 2527 | 3-5 | | IM Vazquez, Guillermo | 2527 | 08/06/2021 | 19:30 | | |
| GM Ortiz, Isan Reynaldo | 2545 | 4,5-1,5 | | GM Aguero, Luis Lazaro | 2503 | 08/06/2021 | 21:00 | | |
| GM Iturrizaga, Eduardo | 2607 | 5-0 | | IM Vega, Sabrina | 2392 | 09/06/2021 | 19:00 | | |
| GM Flores, Diego | 2599 | 5-1 | | IM Matnadze, Ana | 2421 | 09/06/2021 | 20:30 | | |
| GM Almeida, Omar | 2535 | 5-6 | | GM Cuenca, Jose Fernando | 2524 | 10/06/2021 | 21:00 | | |
| GM Bachmann, Axel | 2599 | 4,5-2,5 |  | IM Abarca, Nicolas | 2412 | 11/06/2021 | 18:00 | | |
| GM Alonso, Alvar | 2572 | 5-3 | | IM Diaz, Carles | 2463 | 11/06/2021 | 21:00 | | |
| GM Quesada, Yasser | 2565 | 5-1 |  | GM Rodriguez, Andres | 2484 | 12/06/2021 | 18:00 | | |
| GM Felgaer, Ruben | 2572 | 0,5-4,5 | | GM Asis, Hipolito | 2475 | 13/06/2021 | 18:30 | | |
| GM Ibarra, Jose Carlos | 2558 | 5-1 |  | GM Matamoros, Carlos S. | 2487 | 13/06/2021 | 20:00 | | |
| GM Henriquez, Cristobal | 2606 | 3-5 |  | FM Martinez, Pedro Ramon | 2417 | 13/06/2021 | 21:30 | | |
| GM Mareco, Sandro | 2629 | 4,5-0,5 | | IM Lujan, Carolina | 2346 | 13/06/2021 | 23:00 | | |
| GM Santos, Jaime | 2608 | 4,5-2,5 | | IM Leiva, Giuseppe | 2391 | 14/06/2021 | 17:30 | | |
| GM Perez, Federico | 2554 | 4,5-1,5 | | GM Ruiz, Joshua Daniel | 2502 | 14/06/2021 | 19:00 | | |
 | GM Gonzalez, Juan Carlos | 2540 | 5,5-5,5 | | GM Salinas, Pablo | 2514 | 14/06/2021 | 20:30 | | |
| GM Salgado, Ivan | 2599 | 4,5-1,5 | | IM Valderrama, Esteban Alb | 2430 | 15/06/2021 | 18:00 | | |
| GM Perez, Manuel | 2607 | 4-6 |  | IM Jimenez, Emmanuel | 2397 | 15/06/2021 | 19:30 | | |
| GM Albornoz, Carlos Daniel | 2573 | 0,5-4,5 | | GM Vasquez, Rodrigo | 2459 | 15/06/2021 | 21:00 | | |
| GM Peralta, Fernando | 2566 | 5-6 | | IM Di Berardino, Diego Rafael | 2471 | 16/06/2021 | 17:00 | | |
| GM Delgado, Neuris | 2622 | 5-0 | | IM Fierro, Martha L. | 2359 | 18/06/2021 | 17:00 | | |
