| Aslan, Rafkat | Kazakhstan U19 |  Kazakhstan |
| Asp, Par | Gefle (SWE) |  Sweden |
| Asp, Jonathan | Trelleborg (SWE) / Sweden U21 | Sweden |
| Aspegren, Felipe | Finland U19 |  Finland |
| Asset, Aizhamal | Kazakhstan WU19 | Kazakhstan |
| Assou-Ekotto, Benoît | Tottenham (ENG) |  Cameroon |
| Assoumin, Yoann | France U17 |  France |
| Astori, Davide | Cagliari (ITA) |  Italy |
| Aswani, Raja | Gibraltar FUT |  Gibraltar |
| Aszkiełowicz, Weronika | Poland WOCO |  Poland |
| Atamaņukovs, Vadims | Nikars (LVA) / Latvia FUT |  Latvia |
| Atanasova, Nelly | NSA Sofia (BUL) / Bulgaria WOCO |  Bulgaria |
| Atanasova, Zhasmina | Bulgaria WU17 | Bulgaria |
| Atheba, Jordan | Belgium U19 |  Belgium |
| Atik, Onur | Ankara (TUR) / Turkey FUT |  Turkey |
| Atınç Nukan | Beşiktaş (TUR) | Turkey |
| Atladóttir, Sif | Valur (ISL) / Iceland WOCO |  Iceland |
| Atta, Walid | Helsingborg (SWE) | Sweden |
| Atyeo, Thomas | Wales U17 |  Wales |
| Audunsdóttir, Sveinbjorg Andrea | Iceland WU19 | Iceland |
| Auer, Stephan | Admira (AUT) |  Austria |
| Augustinsson, Ludwig | Göteborg (SWE) / Sweden U19 | Sweden |
| Augusto Silva, Emídio Rafael | Braga (POR) |  Portugal |
| Augustyn, Blazej | Catania (ITA) | Poland |
| Aurtenetxe, Jon | Athletic (ESP) / Spain U21 |  Spain |
| Auvinen, Paula | Finland WU19 | Finland |
| Avagyan, Artur | Armenia / Czech Republic |  Armenia |
| Aviv, Guy | Israel U17 |  Israel |
| Avižen, Miroslav | Bekentas (LTU) |  Lithuania |
| Avlonitis, Tassos | Panionios (GRE) / Greece U21 |  Greece |
| Avrămia, Adrian | Iaşi (ROU) |  Romania |
| Ay, Selim | Konyaspor (TUR) / Turkey U21 | Turkey |
| Aydın, Toscalı | Mersin (TUR) | Turkey |
| Aydin, Mahir | İstanbul BB (TUR) | Turkey |
| Aydin, Eren | Elazığspor (TUR) | Turkey |
| Aydın, Canberk | Turkey U19 | Turkey |
| Aykut Demir | Gençlerbirliği (TUR) | Turkey |
| Aylin Dişli | Turkey WU17 | Turkey |
| Ayoze | Deportivo (ESP) | Spain |
| Ayşe Gürbüz | Ataşehir (TUR) | Turkey |
| Aythami | Deportivo (ESP) | Spain |
| Aytov, Vladimir | Bulgaria U17 | Bulgaria |
| Ayuba, Yosif | Djurgården (SWE) | Sweden |
| Azamatov, Evgeni | Aktobe (KAZ) / Kazakhstan U21 | Kazakhstan |
| Azatskiy, Olexandr | Ukraine U19 |  Ukraine |
| Aziz Sağlam | Turkey FUT | Turkey |
| Azpilicueta, César | Chelsea (ENG) / Spain | Spain |
| Azzopardi, Ian | Malta |  Malta |
| Azzopardi, Maria | Malta WOCO | Malta |
| Ba, Abdoulaye | Porto (POR) |  Senegal |
