| Jaadla, Hannaliis | Estonia WOCO |  Estonia | Midfield |
| Jääger, Enar | Estonia | Estonia | Defender |
| Jääkeläinen, Juha-Pekka | Finland U17 |  Finland | Midfield |
| Jaakkola, Anssi | Kilmarnock (SCO) | Finland | Goalkeeper |
| Jaakonsaari, Tia-Maria | PK-35 (FIN) | Finland | Midfield |
| Jääskeläinen, Jussi | West Ham (ENG) | Finland | Goalkeeper |
| Jablončíková, Michaela | Czech Republic WU17 |  Czech Republic | Defender |
| Jaccarini, Beppe | Malta U17 |  Malta | Defender |
| Jack, Ryan | Aberdeen (SCO) / Scotland U21 |  Scotland | Midfield |
| Jackson, Simeon | Norwich (ENG) |  Canada | Forward |
| Jackson, Giuliano | Racing Union (LUX) / Luxembourg U19 / Luxembourg U21 |  Luxembourg | Defender |
| Jackson, Carla | Scotland WU17 | Scotland | Midfield |
| Jackson Martínez | Porto (POR) |  Colombia | Forward |
| Jacobo | PAOK (GRE) |  Spain | Goalkeeper |
| Jacobsen, Lars | København (DEN) / Denmark |  Denmark | Defender |
| Jacobsen, Erling | Faroe Islands / Faroe Islands U21 |  Faroe Islands | Defender |
| Jacobsen, Sigrid | Klaksvík (FRO) / Faroe Islands WOCO | Faroe Islands | Midfield |
| Jacobsen, Róaldur | Faroe Islands U21 | Faroe Islands | Midfield |
| Jacobsen, Monrad | Faroe Islands U21 | Faroe Islands | Defender |
| Jacobsen, Elsa | Faroe Islands WU19 | Faroe Islands | Midfield |
| Jacobsen, Jógvan | Faroe Islands U17 | Faroe Islands | Midfield |
| Jacobsen, Jón | Suduroy (FRO) / Faroe Islands U19 | Faroe Islands | Defender |
| Jacobsen, Rúna | Faroe Islands WU17 | Faroe Islands | Forward |
| Jafarguliyev, Emin | Sumqayıt (AZE) / Azerbaijan U21 |  Azerbaijan | Defender |
| Jafarov, Elnur | Xäzär Länkäran (AZE) / Azerbaijan U17 | Azerbaijan | Forward |
| Jafarova, Gulsum | Azerbaijan WU19 | Azerbaijan | Forward |
| Jafarzade, Sevinj | Azerbaijan WU19 | Azerbaijan | Midfield |
| Jafetsson, Aron Grétar | Stjarnan (ISL) / Iceland U19 |  Iceland | Defender |
| Jäger, Annabel | Wolfsburg (GER) / Germany WU19 |  Germany | Midfield |
| Jäger, Lukas | Austria U19 |  Austria | Defender |
| Jaggi, Nordyn | Minerva (SUI) |  Switzerland | Midfield |
| Jagielka, Phil | Everton (ENG) / England |  England | Defender |
| Jagiełło, Aleksander | Legia (POL) |  Poland | Midfield |
| Jagne, Pa Modou | St Gallen (SUI) |  Gambia | |
| Jagodinskis, Vitālijs | Daugava Rīga (LVA) / Latvia U21 |  Latvia | Midfield |
| Jahhimovitš, Aleksei | Estonia U21 | Estonia | Defender |
| Jahić, Sanel | Karabükspor (TUR) |  Bosnia and Herzegovina | Midfield |
| Jahovik, Adis | Zürich (SUI) / FYROM |  FYROM | Forward |
| Jaime | Beira-Mar (POR) |  Portugal | Midfield |
| Jaime | Valladolid (ESP) | Spain | Goalkeeper |
| Jaissle, Matthias | Hoffenheim (GER) | Germany | Defender |
| Jajá | Metalist (UKR) |  Brazil | Forward |
| Jakab, Réka | Femina (HUN) / Hungary WOCO |  Hungary | Forward |
| Jakabfi, Zsanett | Wolfsburg (GER) / Hungary WOCO | Hungary | Midfield |
| Jakimovski, Nikola | Makedonija (MKD) / FYROM U21 | FYROM | Forward |
| Jakobia, Lasha | Hoverla (UKR) |  Georgia | Forward |
| Jakobsen, Michael | København (DEN) | Denmark | Defender |
| Jakobsen, Simon | Silkeborg (DEN) | Denmark | Defender |
| Jakobsson, Sofia | Rossiyanka (RUS) |  Sweden | Forward |
| Jakobsson, Nina | Sweden WU19 | Sweden | Midfield |
