| FideId | Nafn | RatingStd | +- | Flokkur | Kyn | Club | Virkur |
|---|---|---|---|---|---|---|---|
| 1055810 | Norbert Harmanus | 1963 | 2 | 21-49 | Karl | SSON | ✔ |
| 2304376 | Nökkvi Sverrisson | 2031 | 21-49 | Karl | TV | ✔ | |
| 2306816 | Oddgeir Ottesen | 1733 | 21-49 | Karl | KR | ✔ | |
| 2320959 | Oddgeir Reynisson | 0 | S50 | Karl | SSON | ✔ | |
| 2321700 | Oddur Ingimarsson | 0 | 21-49 | Karl | SSON | ✔ | |
| 2303523 | Oddur Tómas Oddsson | 1461 | 21-49 | Karl | SSON | ✔ | |
| 14100487 | Oleksandr Sulypa | 2463 | S50 | Karl | TR | ✔ | |
| 2305623 | Oliver Aron Jóhannesson | 2205 | 21-49 | Karl | Fjölnir | ✔ | |
| 2321963 | Oliver Kovácik | 1192 | U10 | Karl | Breiðablik | ✔ | |
| 2315580 | Olof Bergvinsdottir | 0 | U16 | Kona | Utan félags | ✔ | |
| 10601279 | Omar Salama | 2187 | 21-49 | Karl | TR | ✔ | |
| 2310155 | Orri Árnason | 0 | S50 | Karl | Mosfellsbær - óvirkt | ✔ | |
| 2303515 | Orri Freyr Oddsson | 0 | 21-49 | Karl | Goðinn | ✔ | |
| 2315300 | Orri Hilmarsson | 0 | 21-49 | Karl | Vinaskákfélagið | ✔ | |
| 2305178 | Ólafur Ásgrímsson | 0 | S65 | Karl | TR | ✔ | |
| 2300869 | Ólafur B Þórsson | 2158 | S50 | Karl | Vinaskákfélagið | ✔ | |
| 2316501 | Ólafur Bjarnason | 1836 | S65 | Karl | KR | ✔ | |
| 2304481 | Ólafur Evert Úlfsson | 1812 | 21-49 | Karl | Hrókar alls fagnaðar | ✔ | |
| 2317575 | Ólafur Fannar Pétursson | 1007 | U14 | Karl | Breiðablik | ✔ | |
| 2302705 | Ólafur Gísli Jónsson | 1808 | 39 | S65 | Karl | KR | ✔ |
| 2306093 | Ólafur Hermannsson | 1563 | S50 | Karl | TV | ✔ | |
| 2311550 | Ólafur Hlynur Guðmarsson | 1670 | 21-49 | Karl | SSON | ✔ | |
| 2301512 | Ólafur Í Hannesson | 2103 | 21-49 | Karl | Víkingaklúbburinn | ✔ | |
| 2309238 | Ólafur Jens Sigurðsson | 1480 | 18 | 21-49 | Karl | Utan félags | ✔ |
| 2310244 | Ólafur Jóhannsson | 0 | S50 | Karl | Mosfellsbær - óvirkt | ✔ | |
| 2301326 | Ólafur Kjartansson | 1952 | 21-49 | Karl | TR | ✔ | |
| 2300656 | Ólafur Kristjánsson | 2098 | S65 | Karl | SA | ✔ | |
| 370243352 | Ólafur Sindri Helgason | 0 | 21-49 | Karl | TR | ✔ | |
| 2302292 | Ólafur Týr Guðjónsson | 0 | S50 | Karl | TV | ✔ | |
| 2306662 | Óli Á Vilhjálmsson | 0 | S65 | Karl | TV | ✔ | |
| 2320142 | Óli Pálsson | 1344 | 49 | 21-49 | Karl | SSON | ✔ |
| 2303310 | Óli Þór Kjartansson | 0 | S50 | Karl | Breiðablik | ✔ | |
| 2312352 | Óliver Ísak Ólason | 0 | U20 | Karl | SA | ✔ | |
| N/A | Ómar Bragi Sigurðsson | 0 | 21-49 | Karl | TR | ✔ | |
| 2304910 | Ómar Ingólfsson | 0 | S65 | Karl | TG | ✔ | |
| 2306166 | Ómar Páll Axelsson | 0 | 21-49 | Karl | TG | ✔ | |
| 2301237 | Óskar Bjarnason | 2167 | 10 | S50 | Karl | TG | ✔ |
| 2309505 | Óskar Einarsson | 1258 | S65 | Karl | Vinaskákfélagið | ✔ | |
| 2317184 | Óskar Ísak Óskarsson | 0 | U16 | Karl | TR | ✔ | |
| 2309220 | Óskar Long Einarsson | 1691 | 11 | 21-49 | Karl | SA | ✔ |
| 2303779 | Óskar Maggason | 1776 | S50 | Karl | TG | ✔ | |
| 2310627 | Óskar Víkingur Davíðsson | 1873 | U18 | Karl | TG | ✔ | |
| 2313057 | Óttar Örn Bergmann Sigfússon | 1472 | U16 | Karl | Breiðablik | ✔ | |
| 2303442 | Patrekur Maron Magnússon | 2018 | 21-49 | Karl | Hrókar alls fagnaðar | ✔ | |
| 12923915 | Patrick Karcher | 2122 | 4 | 21-49 | Karl | Vinaskákfélagið | ✔ |
| 14102951 | Pavel Eljanov | 2681 | 21-49 | Karl | Víkingaklúbburinn | ✔ | |
| 2300923 | Páll Agnar Þórarinsson | 2168 | 21-49 | Karl | Víkingaklúbburinn | ✔ | |
| 2318504 | Páll Ammendrup Ólafsson | 0 | 21-49 | Karl | TV | ✔ | |
| 2300630 | Páll Andrason | 1928 | 21-49 | Karl | TV | ✔ | |
| 2303205 | Páll G Jónsson | 1832 | S65 | Karl | KR | ✔ |