The 9th BRDC International Trophy was a motor race, run to Formula One rules, held on 14 September 1957 at Silverstone Circuit, Northamptonshire. The race was run over two 15 lap heats and a 35 lap final, and was won by French driver Jean Behra in a BRM P25.

The field also included several Formula Two cars, highest finisher being Roy Salvadori in a Cooper T43, finishing in eighth place overall.

Note: a blue background indicates a car running under Formula 2 regulations.

No.	Driver	Entrant	Constructor	Notes
1	Jo Bonnier	Scuderia Centro Sud	Maserati 250F
2	Masten Gregory	Scuderia Centro Sud	Maserati 250F
3	Stirling Moss	Vandervell Products Ltd	Vanwall	DNA
4	Tony Brooks	Vandervell Products Ltd	Vanwall	DNA
5	Stuart Lewis-Evans	Vandervell Products Ltd	Vanwall	DNA
6	Jean Behra	Owen Racing Organisation	BRM P25
7	Harry Schell	Owen Racing Organisation	BRM P25
8	Ron Flockhart	Owen Racing Organisation	BRM P25
9	Ivor Bueb	Gilby Engineering	Maserati 250F
10	Tony Brooks	R.R.C. Walker Racing Team	Cooper T43-Climax
11	Jimmy Stewart	Jimmy Stewart	Cooper T23-Bristol
12	Bob Gerard	F.R. Gerard	Cooper-BG T43-Bristol
14	Jack Brabham2	Cooper Car Company	Cooper T43-Climax
	Roy Salvadori1			DNA
15	Horace Gould	Horace Gould	Maserati 250F
16	Marc Rozier	Marc Rozier	Ferrari 500/625
17	Bruce Halford	Bruce Halford	Maserati 250F
18	Geoff Richardson	Geoff Richardson	RRA-Jaguar
19	Les Leston	Les Leston	Cooper T43-Climax
20	Dennis Taylor	Dennis Taylor	Lotus 12-Climax
21	Ronnie Moore	Kiwi Equipe	Cooper T43-Climax
22	Raymond Thackwell	Kiwi Equipe	Cooper T43-Climax
23	Paul England	Ridgeway Managements	Cooper T41-Climax	DNA
24	Dick Gibson	Dick Gibson	Cooper T43-Climax
25	Tony Marsh	Ridgeway Managements	Cooper T43-Climax
26	Jack Fairman	R.R.C. Walker Racing Team	Cooper T43-Climax
	Mike Anthony			DNA
27	Noel Cunningham-Reid	R.R.C. Walker Racing Team	Cooper T41-Climax
28	George Wicken	George Wicken	Cooper T43-Climax
29	Brian Naylor	JB Naylor	Cooper T43-Climax
30	Keith Hall	Team Lotus	Lotus 12-Climax
31	Cliff Allison	Team Lotus	Lotus 12-Climax
32	Henry Taylor	Team Lotus	Lotus 12-Climax
	Colin Chapman			DNA
33	Ian Burgess	Cooper Car Company	Cooper T43-Climax
34	Graham Hill3	Cooper Car Company	Cooper T43-Climax
	Jack Brabham2			DNA
35	Roy Salvadori1	Cooper Car Company	Cooper T43-Climax
	John Cooper			DNA
36	Graham Hill3	John Willment (Automobiles)	Willment-Climax	DNA
37	Innes Ireland	Equipe Endeavour	Cooper T43-Climax
38	Jim Russell	Alan Brown	Cooper T43-Climax
39	Archie Scott-Brown	Lister Engineering	Lister-Climax
40	Alejandro de Tomaso	O.S.C.A.	OSCA F2

Notes:

¹Roy Salvadori drove the works' Cooper number 35, which had been entered for John Cooper, who did not take part.

²Jack Brabham drove car number 14 in place of Salvadori.

³Graham Hill drove car number 34 in place of Brabham.

Notes:

¹ Tony Brooks took over Fairman's car in order to qualify for the final

² Cliff Allison took over Taylor's car in order to qualify for the final

Note: a blue background indicates a car running under Formula 2 regulations.

Pos.	No.	Driver	Car	Time/Retired	Grid
1	6	Jean Behra	BRM P25	1h01m30.0, 160.87 km/h	1
2	7	Harry Schell	BRM P25	1h03m00.0 (+1m30s)	4
3	8	Ron Flockhart	BRM P25	1h03m06.0 (+1m36s)	2
4	1	Jo Bonnier	Maserati 250F	1h03m07.0 (+1m37s)	6
5	2	Masten Gregory	Maserati 250F	34 laps	3
6	15	Horace Gould	Maserati 250F	34 laps	7
7	17	Bruce Halford	Maserati 250F	34 laps	8
8	35	Roy Salvadori	Cooper T43-Climax	34 laps	21
9	9	Ivor Bueb	Maserati 250F	33 laps	10
10	28	George Wicken	Cooper T43-Climax	33 laps	12
11	25	Tony Marsh	Cooper T43-Climax	33 laps	11
12	27	Noel Cunningham-Reid	Cooper T41-Climax	33 laps	15
13	36	Graham Hill	Cooper T43-Climax	33 laps	18
14	12	Bob Gerard	Cooper BGT43-Bristol	32 laps	16
15	19	Les Leston	Cooper T43-Climax	32 laps	14
16	24	Dick Gibson	Cooper T43-Climax	31 laps	24
17	21	Ronnie Moore	Cooper T43-Climax	31 laps	26
18	11	Jimmy Stewart	Cooper T23-Bristol	31 laps	25
DNF	32	Cliff Allison	Lotus 12-Climax	30 laps - crash	17
DNF	20	Dennis Taylor	Lotus 12-Climax	?	19
DNF	33	Ian Burgess	Cooper T43-Climax	engine	20
DNF	14	Jack Brabham	Cooper T43-Climax	22 laps - oil pipe	5
DNF	37	Innes Ireland	Cooper T43-Climax	half-shaft	9
DNF	38	Jim Russell	Cooper T43-Climax	mechanical	22
DNF	22	Raymond Thackwell	Cooper T43-Climax	oil pressure	23
DNF	26	Tony Brooks	Cooper T43-Climax	valve	13

• "1957 International Trophy Results". Motor Sport Magazine. Retrieved 2019-12-17.
• "1957 Non-World Championship Grands Prix". silhouet.com. Retrieved 2019-12-18.
• "IX B.R.D.C. Daily Express International Trophy 1957". the-fastlane.co.uk. Retrieved 2019-12-18.