| Apam, Onyekachi | Rennes (FRA) |  Nigeria | Defender |
| Apanaschenko, Daryna | Zvezda 2005 Perm (RUS) / Ukraine WOCO |  Ukraine | Midfield |
| Apap, Ferdinando | Mosta (MLT) / Malta U21 |  Malta | Defender |
| Apostolaki, Elisavet | Greece WOCO |  Greece | Goalkeeper |
| Apostolopoulos, Alexis | PAOK (GRE) / Greece U21 | Greece | Defender |
| Apostolov, Artur | Moldova U19 |  Moldova | Defender |
| Apostu, Bogdan | U Cluj (ROU) |  Romania | Midfield |
| Aquilani, Alberto | Fiorentina (ITA) |  Italy | Midfield |
| Araai, Michel | France U17 |  France | Forward |
| Arab, Samir | Valletta (MLT) / Malta U19 | Malta | Defender |
| Arabatzis, Giannis | AEK (GRE) | Greece | Goalkeeper |
| Arabuli, Bachana | Georgia U19 |  Georgia | Forward |
| Aradóttir, Írunn | Stjarnan (ISL) / Iceland WU19 |  Iceland | Defender |
| Arajuuri, Paulus | Kalmar (SWE) / Finland |  Finland | Midfield |
| Arakelyan, Alik | Armenia U17 |  Armenia | Midfield |
| Aranda, Carlos | Granada (ESP) |  Spain | Forward |
| Arandjelović, Jovana | Serbia WU17 |  Serbia | Midfield |
| Arango, Juan | Mönchengladbach (GER) |  Venezuela | Midfield |
| Arantes, Paulo | Gil Vicente (POR) |  Portugal | |
| Aranzubia, Daniel | Deportivo (ESP) | Spain | Goalkeeper |
| Arapi, Renato | Albania |  Albania | Defender |
| Aravidis, Christos | Panionios (GRE) | Greece | Midfield |
| Araz, Musa | Switzerland U19 |  Switzerland | Midfield |
| Arbeitman, Shlomi | Mons (BEL) |  Israel | Forward |
| Arbeloa, Álvaro | Real Madrid (ESP) / Spain | Spain | Defender |
| Arboleda, Manuel | Lech (POL) |  Colombia | Defender |
| Arbulu, Carleta | Standard (BEL) |  USA | Forward |
| Arce, Nicolas | Pescara (ITA) |  Argentina | Defender |
| Archer, Jordan | Tottenham (ENG) / Scotland U21 |  Scotland | Goalkeeper |
| Archibald, Chloe | Northern Ireland WOCO |  Northern Ireland | Defender |
| Arda Turan | Atlético (ESP) / Turkey |  Turkey | Midfield |
| Ardelyan, Nutsu | Ukraine U17 | Ukraine | Forward |
| Areias | Guimarães (POR) | Portugal | Defender |
| Arendaruk, Denys | Ukraine U17 | Ukraine | Midfield |
| Aréola, Alphonse | PSG (FRA) | France | Goalkeeper |
| Arévalo, Egidio | Palermo (ITA) |  Uruguay | Midfield |
| Arge, Marko | Tulevik (EST) / Estonia FUT |  Estonia | Defender |
| Arge, Lív | Faroe Islands WU17 / Faroe Islands WOCO |  Faroe Islands | Forward |
| Argyropoulos, Leonidas | Platanias (GRE) | Greece | Defender |
| Ari | Spartak Moskva (RUS) |  Brazil | Forward |
| Ari | Barcelona (ESP) | Brazil | Defender |
| Arias, Santiago | Sporting (POR) | Colombia | Defender |
| Ariaudo, Lorenzo | Cagliari (ITA) | Italy | Defender |
| Aripov, Ibragim | Kazakhstan U17 |  Kazakhstan | Forward |
| Aritz Aduriz | Athletic (ESP) | Spain | Forward |
| Arizmendi, Javier | Mallorca (ESP) | Spain | Forward |
| Arkivuo, Kari | Häcken (SWE) / Finland | Finland | Defender |
| Arlauskis, Giedrius | Rubin (RUS) / Lithuania |  Lithuania | Goalkeeper |
| Arlet, Vasile | Lexmax (MDA) / Moldova FUT | Moldova | Defender |
| Armand, Sylvain | PSG (FRA) | France | Defender |
