The 1951 Swiss motorcycle Grand Prix was the second race of the 1951 Grand Prix motorcycle racing season. It took place on 27 May 1951 at the Bremgarten circuit.

Pos	Rider	Manufacturer	Laps	Time	Points
1	Fergus Anderson	Moto Guzzi	28	1:34:44.2	8
2	Reg Armstrong	AJS	28	+1:47.9	6
3	Enrico Lorenzetti	Moto Guzzi	28	+2:07.5	4
4	Carlo Bandirola	MV Agusta			3
5	Benoît Musy	Moto Guzzi			2
6	Willy Lips	Norton			1
7	Hans Baltisberger	Norton
8	Max Forster	Gilera
9	Väinö Hollming	Moto Guzzi
10	Sid Mason	Norton
11	Tommy Wood	Norton
12	Alexander Mayer	Norton
[1]

Pos	Rider	Manufacturer	Laps	Time	Points
1	Leslie Graham	Velocette	22	1:10:48.5	8
2	Cecil Sandford	Velocette	22	+1:18.6	6
3	Reg Armstrong	AJS	22	+1:48.6	4
4	Paul Fuhrer	Velocette			3
5	Sid Mason	Velocette			2
6	Leonhardt Faßl	AJS			1
7	Hans Baltisberger	AJS
8	Werner Mazanec	AJS
9	Herbert Laederach	AJS
10	Edmund Laederach	Norton
11	Väinö Hollming	Velocette
12	Helmut Volzwinkler	Norton
13	Heinrich Stamm	Velocette
14	Denis Jenkinson	Norton
[1]

Pos	Rider	Manufacturer	Laps	Time	Points
1	Dario Ambrosini	Benelli	18	1:05:32.1	8
2	Bruno Ruffo	Moto Guzzi	18	+1:10.8	6
3	Gianni Leoni	Moto Guzzi	18	+3:00.3	4
4	Benoît Musy	Moto Guzzi			3
5	Cecil Sandford	Velocette			2
6	Nino Grieco	Parilla			1
7	H. Steffan	Parilla
8	Alano Montanari	Moto Guzzi
9	Hans Haldemann	Parilla
10	Carlo Bellotti	Moto Guzzi
11	R. Thiery	Monet-Goyon
12	Heinrich Thorn-Prikker	Moto Guzzi
[1]

Pos	Rider	Passenger	Manufacturer	Laps	Time	Points
1	Ercole Frigerio	Ezio Ricotti	Gilera	16	1:01:27.6	8
2	Albino Milani	Giuseppe Pizzocri	Gilera	16	+2:03.6	6
3	Ernesto Merlo	Dino Magri	Gilera	16	+2:56.4	4
4	Marcel Masuy	Denis Jenkinson	Norton			3
5	Eric Oliver	Lorenzo Dobelli	Norton			2
6	Giovanni Carru	Carlo Musso	Carru			1
7	Jakob Keller	Gianfranco Zanzi	Eigenbau
8	Luigi Marcelli	?	Gilera
9	Henri Meuwly	?	Gilera
10	Heinrich Stamm	?	Norton
11	Renato Prati	Marino Saguato	Moto Guzzi
12	F. Vaasen	?	Norton
13	Carlo Vittone	?	Carru
[1]