| Carlo Achatzi | ITA | 1925/26 | 2 | 2 | 0 | 0 | 9 | 1 | Parma | | |
| Camillo Achilli | ITA | 1959/60 | 1 | 1 | 0 | 0 | 3 | 0 | Inter | | |
| Leonardo Acori | ITA | 2006/07 | 2 | 0 | 2 | 0 | 1 | 1 | Rimini | | |
| Karl Adamek | AUT | 1957/58 | 1 | 0 | 1 | 0 | 0 | 0 | Atalanta | | |
| Dick Advocaat | OLA | 2008/09 | 2 | 1 | 1 | 0 | 1 | 0 | Zenit FC | | |
| Andrea Agostinelli | ITA | 2002/07 | 3 | 3 | 0 | 0 | 4 | 0 | Napoli, Piacenza, Triestina | | |
| Aldo Agroppi | ITA | 1985/93 | 4 | 3 | 0 | 1 | 5 | 2 | Como, Fiorentina | | |
| Koldo Aguirre | SPA | 1976/77 | 2 | 1 | 0 | 1 | 2 | 2 | Athletic Bilbao | | |
| Giuseppe Aliberti | ITA | 1931/32 | 2 | 1 | 1 | 0 | 3 | 0 | Torino | | |
| Federico Allasio | ITA | 1947/61 | 11 | 8 | 0 | 3 | 28 | 17 | Bologna, Genoa, Lazio, Lucchese, Torino | | |
| Massimiliano Allegri | ITA | 2008/14 | 14 | 8 | 2 | 4 | 19 | 15 | Cagliari, Milan | |  |
| Luigi Allemandi | ITA | 1938/39 | 1 | 0 | 1 | 0 | 1 | 1 | Lazio | | |
| Ronald Allen | ING | 1980/81 | 2 | 1 | 0 | 1 | 6 | 4 | Panathinaikos Athens | | |
| Walter Alt | ING | 1924/36 | 6 | 4 | 0 | 2 | 15 | 11 | Lazio, Spal | | |
| Amadeo Amadei | ITA | 1955/61 | 10 | 5 | 2 | 3 | 19 | 13 | Napoli | | |
| Paulo Amaral | BRA | 1964/65 | 2 | 2 | 0 | 0 | 8 | 0 | Genoa | | |
| Aldo Ammazzalorso | ITA | 2006/07 | 1 | 1 | 0 | 0 | 2 | 0 | Pescara | | |
| Angelos Anastasiadis | GRE | 2000/01 | 2 | 1 | 0 | 1 | 3 | 4 | Panathinaikos Athens | | |
| Carlo Ancelotti | ITA | 1996/19 | 28 | 9 | 14 | 5 | 37 | 33 | Milan, Napoli, Parma, Real Madrid | | |
| Aurelio Andreazzoli | ITA | 2012/19 | 3 | 2 | 0 | 1 | 3 | 2 | Empoli, Roma | | |
| Sergey Andreev | BUL | 1999/00 | 2 | 2 | 0 | 0 | 9 | 1 | Rostov | | |
| Piero Andreoli | ITA | 1951/57 | 4 | 0 | 4 | 0 | 4 | 4 | Catania, Lucchese, Vicenza | | |
| Stefano Angeleri | ITA | 1965/69 | 5 | 2 | 3 | 0 | 7 | 4 | Atalanta | | |
| Antonio Angelillo | ARG | 1979/86 | 4 | 3 | 1 | 0 | 8 | 2 | Avellino, Palermo, Pescara | | |
| Radomir Antić | SER | 2002/03 | 2 | 1 | 1 | 0 | 3 | 2 | Barcelona | | |
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