The 1991 430 km of Silverstone was the third round of the 1991 World Sportscar Championship season, taking place at Silverstone Circuit, United Kingdom. It took place on 19 May 1991.

Class winners in bold. Cars failing to complete 90% of the winner's distance marked as Not Classified (NC).

Pos	Class	No	Team	Drivers	Chassis	Tyre	Laps
					Engine
1	C1	4	Silk Cut Jaguar	Teo Fabi Derek Warwick	Jaguar XJR-14	G	83
					Cosworth HB 3.5L V8
2	C1	2	Team Sauber Mercedes	Karl Wendlinger Michael Schumacher	Mercedes-Benz C291	G	82
					Mercedes-Benz M291 3.5L Flat-12
3	C1	3	Silk Cut Jaguar	Martin Brundle	Jaguar XJR-14	G	79
					Cosworth HB 3.5L V8
4	C2	1	Team Sauber Mercedes	Jochen Mass Jean-Louis Schlesser	Mercedes-Benz C11	G	79
					Mercedes-Benz M119 5.0L Turbo V8
5	C1	8	Euro Racing	Cor Euser Richard Piper	Spice SE90C	G	78
					Ford Cosworth DFR 3.5L V8
6	C1	5	Peugeot Talbot Sport	Mauro Baldi Philippe Alliot	Peugeot 905	M	78
					Peugeot SA35 3.5L V10
7	C2	16	Repsol Brun Motorsport	Oscar Larrauri Jesús Pareja	Porsche 962C	Y	77
					Porsche Type-935 3.2L Turbo Flat-6
8	C2	11	Porsche Kremer Racing	Manuel Reuter Harri Toivonen	Porsche 962CK6	Y	76
					Porsche Type-935 3.2L Turbo Flat-6
9	C2	13	Courage Compétition	Michel Trollé Claude Bourbonnais	Cougar C26S	G	75
					Porsche Type-935 3.2L Turbo Flat-6
10	C2	17	Repsol Brun Motorsport	Massimo Sigala Walter Brun	Porsche 962C	Y	75
					Porsche Type-935 3.0L Turbo Flat-6
11	C2	18	Mazdaspeed	David Kennedy Maurizio Sandro Sala	Mazda 787	D	74
					Mazda R26B 2.6L 4-Rotor
12 NC	C2	14	Team Salamin Primagaz	Antoine Salamin Max Cohen-Olivar	Porsche 962C	G	49
					Porsche Type-935 3.0L Turbo Flat-6
13 DNF	C1	6	Peugeot Talbot Sport	Keke Rosberg Yannick Dalmas	Peugeot 905	M	50
					Peugeot SA35 3.5L V10
14 DNF	C2	21	Konrad Motorsport	Franz Konrad Tiff Needell	Porsche 962C	G	35
					Porsche Type-935 3.2L Turbo Flat-6
15 DNF	C2	59	Team Salamin Primagaz Team Schuppan	Eje Elgh Jonathan Palmer	Porsche 962C	D	33
					Porsche Type-935 3.2L Turbo Flat-6
16 DNF	C2	12	Courage Compétition	Marco Brand François Migault	Cougar C26S	G	6
					Porsche Type-935 3.2L Turbo Flat-6
DNS	C1	60	Louis Descartes Chamberlain Engineering	Mercedes Stermitz John Sheldon	Spice SE89C	G	-
					Ford Cosworth DFZ 3.5L V8
DNQ	C1	7	Louis Descartes	Luigi Taverna Philippe de Henning	ALD C91	G	-
					Ford Cosworth DFR 3.5L V8

• Pole Position - Martin Brundle (#4 Silk Cut Jaguar) - 1:27.478
• Fastest Lap - Martin Brundle (#3 Silk Cut Jaguar) - 1:29.372
• Average Speed - 196.413 km/h

NB: Martin Brundle took the pole on #4 car (chassis-Nr 691) and made the best lap on #3 car (chassis-Nr 591). He raced only the #3 car being the solo driver.

• WSPR-Racing - 1991 Silverstone results