Italiens Grand Prix 1985 var det tolfte av 16 lopp ingående i formel 1-VM 1985.
- Alain Prost, McLaren-TAG, 9 poäng
- Nelson Piquet, Brabham-BMW, 6
- Ayrton Senna, Lotus-Renault, 4
- Marc Surer, Brabham-BMW, 3
- Stefan "Lill-Lövis" Johansson, Ferrari, 2
- Elio de Angelis, Lotus-Renault, 1
- Patrick Tambay, Renault
- Martin Brundle, Tyrrell-Renault
- Thierry Boutsen, Arrows-BMW
- Philippe Streiff, Ligier-Renault
- Nigel Mansell, Williams-Honda (varv 47, motor)
- Teo Fabi, Toleman-Hart
- Michele Alboreto, Ferrari (45, motor)
- Keke Rosberg, Williams-Honda (varv 44, motor)
- Jacques Laffite, Ligier-Renault (40, motor)
- Niki Lauda, McLaren-TAG (33, transmission)
- Riccardo Patrese, Alfa Romeo (3, avgassystem)
- Huub Rothengatter, Osella-Alfa Romeo (26, motor)
- Philippe Alliot, RAM-Hart (19, turbo)
- Gerhard Berger, Arrows-BMW (13, motor)
- Derek Warwick, Renault (9, transmission)
- Alan Jones, Team Haas (Lola-Hart) (6, motor)
- Eddie Cheever, Alfa Romeo (3, motor)
- Kenny Acheson, RAM-Hart (2, koppling)
- Pierluigi Martini, Minardi-Motori Moderni (0, bränslepump)