thumb|De winnende auto: de Mazda 787B #55. De 24 uur van Le Mans 1991 was de 59e editie van deze endurancerace. De race werd verreden op 22 en 23 juni 1991 op het Circuit de la Sarthe nabij Le Mans, Frankrijk.
De race werd gewonnen door de Mazdaspeed Co. Ltd. #55 van Volker Weidler, Johnny Herbert en Bertrand Gachot. Zij behaalden allemaal hun enige Le Mans-zege. Het was tevens de eerste keer dat de race door een Japanse auto werd gewonnen. De C1-klasse werd gewonnen door de Euro Racing/Team Fedco #41 van Kiyoshi Misaki, Hisashi Yokoshima en Naoki Nagasaka. Dit was tevens de enige auto die in deze klasse binnen de afstandslimiet aan de finish kwam.
Race Winnaars in hun klasse zijn vetgedrukt. Auto's die minder dan 70% van de afstand van de winnaar (253 ronden) hadden afgelegd werden niet geklasseerd.
Pos. Klasse No. Team Coureurs Chassis Banden Ronden Motor 1 C2 55 Mazdaspeed Co. Ltd. Volker Weidler Johnny Herbert Bertrand Gachot Mazda 787B 362 Mazda R26B 2.6L 4-Rotor 2 C2 35 Silk Cut Jaguar Tom Walkinshaw Racing Davy Jones Raul Boesel Michel Ferté Jaguar XJR-12 360 Jaguar 7.4L V12 3 C2 34 Silk Cut Jaguar Tom Walkinshaw Racing Bob Wollek Teo Fabi Kenny Acheson Jaguar XJR-12 358 Jaguar 7.4L V12 4 C2 33 Silk Cut Jaguar Tom Walkinshaw Racing Derek Warwick John Nielsen Andy Wallace Jaguar XJR-12 356 Jaguar 7.4L V12 5 C2 31 Team Sauber Mercedes Karl Wendlinger Michael Schumacher Fritz Kreutzpointner Mercedes-Benz C11 355 Mercedes-Benz M119 5.0L Turbo V8 6 C2 18 Mazdaspeed Co. Ltd. Oreca Dave Kennedy Stefan Johansson Maurizio Sandro Sala Mazda 787B 355 Mazda R26B 2.6L 4-Rotor 7 C2 58 Konrad Motorsport Joest Porsche Racing Hans-Joachim Stuck Derek Bell Frank Jelinski Porsche 962C 347 Porsche Type-935 3.2L Turbo Flat-6 8 C2 56 Mazdaspeed Co. Ltd. Oreca Pierre Dieudonné Takashi Yorino Yojiro Terada Mazda 787 346 Mazda R26B 2.6L 4-Rotor 9 C2 11 Porsche Kremer Racing Manuel Reuter Harri Toivonen JJ Lehto Porsche 962CK6 343 Porsche Type-935 3.2L Turbo Flat-6 10 C2 17 Repsol Brun Motorsport Oscar Larrauri Jesús Pareja Walter Brun Porsche 962C 338 Porsche Type-935 3.2L Turbo Flat-6 11 C2 12 Courage Compétition François Migault Lionel Robert Jean-Daniel Raulet Cougar C26S 331 Porsche Type-935 3.0L Turbo Flat-6 12 C1 41 Euro Racing Team Fedco Kiyoshi Misaki Hisashi Yokoshima Naoki Nagasaka Spice SE90C 326 Ford Cosworth DFZ 3.5L V8 NC C2 53 Team Salamin Primagaz Team Schuppan Hurley Haywood James Weaver Wayne Taylor Porsche 962C 316 Porsche Type-935 3.0L Turbo Flat-6 NC C1 43 Euro Racing PC Automotive Richard Piper Olindo Iacobelli Jean-Louis Ricci Spice SE89C 280 Ford Cosworth DFZ 3.5L V8 NC C2 15 Veneto Equipe Luigi Giorgio Almo Copelli Lancia LC2 111 Ferrari 308C 3.0L Turbo V8 DNF C2 1 Team Sauber Mercedes Jean-Louis Schlesser Jochen Mass Alain Ferté Mercedes-Benz C11 319 Mercedes-Benz M119 5.0L Turbo V8 DNF C2 49 Courage Compétition Trust Racing Steven Andskär George Fouché Porsche 962C 316 Porsche Type-935 3.2L Turbo Flat-6 NC C2 47 Courage Compétition Michel Trollé Claude Bourbonnais Marco Brand Cougar C26S 293 Porsche Type-935 3.0L Turbo Flat-6 DNF C2 51 Team Salamin Primagaz Obermaier Racing Jürgen Lässig Pierre Yver Otto Altenbach Porsche 962C 232 Porsche Type-935 3.2L Turbo Flat-6 DNF C2 32 Team Sauber Mercedes Jonathan Palmer Stanley Dickens Kurt Thiim Mercedes-Benz C11 223 Mercedes-Benz M119 5.0L Turbo V8 DNF C2 52 Team Salamin Primagaz Team Schuppan Eje Elgh Roland Ratzenberger Will Hoy Porsche 962C 202 Porsche Type-935 3.0L Turbo Flat-6 DNF C2 57 Konrad Motorsport Joest Porsche Racing Louis Krages Bernd Schneider Henri Pescarolo Porsche 962C 197 Porsche Type-935 3.2L Turbo Flat-6 DNF C2 36 TWR Suntec Jaguar David Leslie Mauro Martini Jeff Krosnoff Jaguar XJR-12 183 Jaguar 7.4L V12 DNF C1 39 Graff Racing Automobiles Louis Descartes Jean-Philippe Grand Michel Maisonneuve Xavier Lapeyre Spice SE89C 163 Ford Cosworth DFZ 3.5L V8 DNF C2 16 Repsol Brun Motorsport Harald Huysman Robbie Stirling Bernard Santal Porsche 962C 138 Porsche Type-935 3.2L Turbo Flat-6 DNF C2 45 Euro Racing Chamberlain Engineering Nick Adams Robin Donovan Richard Jones Spice SE89C 128 Ford Cosworth DFZ 3.5L V8 DNF C2 14 Team Salamin Primagaz Antoine Salamin Max Cohen-Olivar Marcel Tarrès Porsche 962C 101 Porsche Type-935 3.2L Turbo Flat-6 DNF C2 21 Konrad Motorsport Franz Konrad Anthony Reid Pierre-Alain Lombardi Porsche 962C 98 Porsche Type-935 3.2L Turbo Flat-6 DNF C2 50 Courage Compétition Alméras Frères Jacques Alméras Jean-Marie Alméras Pierre de Thoisy Porsche 962C 86 Porsche Type-935 3.0L Turbo Flat-6 DNF C1 44 Euro Racing Chamberlain Engineering John Sheldon Ferdinand de Lesseps Charles Rickett Spice SE89C 85 Ford Cosworth DFZ 3.5L V8 DNF C1 8 Euro Racing Cor Euser Charles Zwolsman Tim Harvey Spice SE90C 72 Ford Cosworth DFZ 3.5L V8 DNF C1 6 Peugeot Talbot Sport Keke Rosberg Yannick Dalmas Pierre-Henri Raphanel Peugeot 905 68 Peugeot SA35 3.5L V10 DNF C1 40 Euro Racing A.O. Racing Lyn St. James Desiré Wilson Cathy Muller Spice SE90C 47 Ford Cosworth DFZ 3.5L V8 DNF C2 13 Courage Compétition Johnny Dumfries Anders Olofsson Thomas Danielsson Cougar C26S 45 Porsche Type-935 3.0L Turbo Flat-6 DNF C1 37 Automobiles Louis Descartes Racing Organization Course (ROC) Bernard Thuner Pascal Fabre ROC 002 38 Ford Cosworth DFR 3.5L V8 DNF C1 5 Peugeot Talbot Sport Mauro Baldi Philippe Alliot Jean-Pierre Jabouille Peugeot 905 22 Peugeot SA35 3.5L V10 DNF C2 46 Porsche Kremer Racing Tomás López Rocha Gregor Foitek Tiff Needell Porsche 962CK6 18 Porsche Type-935 3.2L Turbo Flat-6 DNF C1 7 Automobiles Louis Descartes Philippe de Henning Luigi Taverna Patrick Gonin ALD C91 16 Ford Cosworth DFR 3.5L V8 DNS C2 59 Konrad Motorsport Joest Porsche Racing Franz Konrad Jürgen Barth Porsche 962C 0 Porsche Type-935 3.0L Turbo Flat-6 DNS C1 4 Silk Cut Jaguar Tom Walkinshaw Racing Teo Fabi Kenny Acheson Andy Wallace Jaguar XJR-14 0 Jaguar Cosworth HB 3.5L V8 DNQ C2 48 Courage Compétition Chris Hodgetts Andrew Hepworth Thierry Lacerf Cougar C24S 0 Porsche Type-935 3.0L Turbo Flat-6 DNQ C1 2 Team Sauber Mercedes Karl Wendlinger Michael Schumacher Fritz Kreutzpointner Mercedes-Benz C291 0 Mercedes-Benz M291 3.5L Flat-12 DNQ C2 42 Euro Racing Justin Bell Shunji Kasuya Spice SE88P 0 Ferrari 308C 3.5L Turbo V8 DNQ C2 54 Team Salamin Primagaz Team Davey Katsunori Iketani Mercedes Stermitz Valentino Musetti Porsche 962C 0 Porsche Type-935 3.2L Turbo Flat-6
1991 Le Mans