| Grand Prix: | Dutch |
| Gp Suffix: | TT |
| Flag: | Netherlands |
| Location: | Circuit van Drenthe, Assen |
| Course Mi: | 4.785 |
| Course Km: | 7.700 |
| Course: | Public roads |
| Race No: | 6 |
| Season No: | 8 |
| Date: | 16 July |
| Year: | 1955 |
| Fast Rider 500: | Geoff Duke Reg Armstrong |
| Fast Rider 500 Country: | UK |
| Fast Rider 500 Bike: | Gilera Gilera |
| Fast Time 500: | 3:31.6 |
| First Rider 500: | Geoff Duke |
| First Rider 500 Country: | UK |
| First Rider 500 Bike: | Gilera |
| Second Rider 500: | Reg Armstrong |
| Second Rider 500 Country: | Ireland |
| Second Rider 500 Bike: | Gilera |
| Third Rider 500: | Umberto Masetti |
| Third Rider 500 Country: | Italy |
| Third Rider 500 Bike: | MV Agusta |
| Fast Rider 350: | Dickie Dale |
| Fast Rider 350 Country: | UK |
| Fast Rider 350 Bike: | Moto Guzzi |
| Fast Time 350: | 3:34.5 |
| First Rider 350: | Ken Kavanagh |
| First Rider 350 Country: | Australia |
| First Rider 350 Bike: | Moto Guzzi |
| Second Rider 350: | Bill Lomas |
| Second Rider 350 Country: | UK |
| Second Rider 350 Bike: | Moto Guzzi |
| Third Rider 350: | Dickie Dale |
| Third Rider 350 Country: | UK |
| Third Rider 350 Bike: | Moto Guzzi |
| Fast Rider 250: | Bill Lomas |
| Fast Rider 250 Country: | UK |
| Fast Rider 250 Bike: | MV Agusta |
| Fast Time 250: | 3:42.4 |
| First Rider 250: | Luigi Taveri |
| First Rider 250 Country: | Switzerland |
| First Rider 250 Bike: | MV Agusta |
| Second Rider 250: | Umberto Masetti |
| Second Rider 250 Country: | Italy |
| Second Rider 250 Bike: | MV Agusta |
| Third Rider 250: | Hermann Paul Müller |
| Third Rider 250 Country: | West Germany |
| Third Rider 250 Bike: | NSU |
| Fast Rider 125: | Luigi Taveri |
| Fast Rider 125 Country: | Switzerland |
| Fast Rider 125 Bike: | MV Agusta |
| Fast Time 125: | 3:53.4 |
| First Rider 125: | Carlo Ubbiali |
| First Rider 125 Country: | Italy |
| First Rider 125 Bike: | MV Agusta |
| Second Rider 125: | Remo Venturi |
| Second Rider 125 Country: | Italy |
| Second Rider 125 Bike: | MV Agusta |
| Third Rider 125: | Rudolf Grimas |
| Third Rider 125 Country: | Austria |
| Third Rider 125 Bike: | Mondial |
| Fast Rider Sidecar: | Cyril Smith |
| Fast Rider Sidecar Country: | UK |
| Fast Rider Sidecar Bike: | Norton |
| Fast Passenger Sidecar: | Stanley Dibben |
| Fast Passenger Sidecar Country: | UK |
| Fast Time Sidecar: | 3:51.9 |
| First Rider Sidecar: | Willi Faust |
| First Rider Sidecar Country: | West Germany |
| First Passenger Sidecar: | Karl Remmert |
| First Passenger Sidecar Country: | West Germany |
| First Rider Sidecar Bike: | BMW |
| Second Rider Sidecar: | Wilhelm Noll |
| Second Rider Sidecar Country: | West Germany |
| Second Passenger Sidecar: | Fritz Cron |
| Second Passenger Sidecar Country: | West Germany |
| Second Rider Sidecar Bike: | BMW |
| Third Rider Sidecar: | Bob Mitchell |
| Third Rider Sidecar Country: | Australia |
| Third Passenger Sidecar: | Max George |
| Third Passenger Sidecar Country: | Australia |
| Third Rider Sidecar Bike: | Norton |
The 1955 Dutch TT was the sixth round of the 1955 Grand Prix motorcycle racing season. It took place on 16 July 1955 at the Circuit van Drenthe, Assen.
A new 4.7 mile (7.7 km) circuit had been built at Assen for the Dutch TT; the public road version was no longer used after 1954. This track set the foundation for future Dutch TT's.
| Pos | Rider | Manufacturer | Laps | Time | Points | |
|---|---|---|---|---|---|---|
| 1 |  Geoff Duke | Gilera | 27 | 1:37:03.9 | 8 | |
| 2 | Reg Armstrong | Gilera | 27 | +35.3 | 6 | |
| 3 |  Umberto Masetti | MV Agusta | 27 | +2:05.3 | 4 | |
| 4 |  Drikus Veer | Gilera | 3 | |||
| 5 |  Bob Brown | Matchless | 2 | |||
| 6 |  Eddie Grant | Norton | 1 | |||
| 7 | Piet Bakker | Norton | ||||
| 8 | Hans-Günter Jäger | Norton | ||||
| 9 | Priem Rozenberg | BMW | ||||
| 10 | Phil Heath | Norton | ||||
| 11 | Robin Fitton | Norton | ||||
| 12 | Piet Knijenburg | Matchless | ||||
| 13 | Casper Swart | Norton | ||||
| 14 | Alfredo Milani | Gilera | ||||
| 15 | Gerrit ten Kate | Norton | ||||
| [1] | ||||||
| Pos | Rider | Manufacturer | Laps | Time | Points | |
|---|---|---|---|---|---|---|
| 1 | Ken Kavanagh | Moto Guzzi | 20 | 1:13:36.2 | 8 | |
| 2 | Bill Lomas | Moto Guzzi | 20 | +0.2 | 6 | |
| 3 | Dickie Dale | Moto Guzzi | 20 | +0.5 | 4 | |
| 4 | August Hobl | DKW | 3 | |||
| 5 | Karl Hofmann | DKW | 2 | |||
| 6 | Hans Bartl | DKW | 1 | |||
| 7 | Hans Baltisberger | NSU | ||||
| 8 | Siegfried Wünsche | DKW | ||||
| 9 | Lo Simons | AJS | ||||
| 10 | Heinz Kauert | AJS | ||||
| Pos | Rider | Manufacturer | Laps | Time | Points | |
|---|---|---|---|---|---|---|
| 1 |  Luigi Taveri | MV Agusta | 17 | 1:04:22.4 | 8 | |
| 2 | Umberto Masetti | MV Agusta | 17 | +41.2 | 6 | |
| 3 | Hermann Paul Müller | NSU | 17 | +43.8 | 4 | |
| 4 | Enrico Lorenzetti | Moto Guzzi | 3 | |||
| 5 | Cecil Sandford | Moto Guzzi | 2 | |||
| 6 | Arthur Wheeler | Moto Guzzi | 1 | |||
| 7 | Günter Beer | Adler | ||||
| 8 | Jack Forrest | NSU | ||||
| 9 | Kurt Knopf | NSU | ||||
| 10 | Piet Knijenburg | NSU | ||||
| 11 | Karl-Julius Holthaus | NSU | ||||
| 12 | Lo Simons | NSU | ||||
| 13 | Ludwig Malchus | NSU | ||||
| Pos | Rider | Manufacturer | Laps | Time/Retired | Points | |
|---|---|---|---|---|---|---|
| 1 | Carlo Ubbiali | MV Agusta | 14 | 57:17.2 | 8 | |
| 2 | Remo Venturi | MV Agusta | 14 | +0.2 | 6 | |
| 3 |  Rudolf Grimas | Mondial | 13 | +1 lap | 4 | |
| 4 | Bill Webster | MV Agusta | 13 | +1 lap | 3 | |
| 5 | Willi Scheidhauer | MV Agusta | 13 | +1 lap | 2 | |
| 6 | Erich Wünsche | MV Agusta | 13 | +1 lap | 1 | |
| 7 | Gerrit Dupont | MV Agusta | ||||
| 8 | Jasper Kaspers | Sparta | ||||
| 9 | Bill Maddrick | MV Agusta | ||||
| 10 | Jan Muijlwijk | DKW | ||||
| 11 | Jan Rietveld | Eysink | ||||
| 15 starters, 11 finishers | ||||||
| Source:[2] | ||||||
| Pos | Rider | Passenger | Manufacturer | Laps | Time | Points | |
|---|---|---|---|---|---|---|---|
| 1 | Willi Faust | Karl Remmert | BMW | 14 | 55:41.1 | 8 | |
| 2 | Wilhelm Noll | Fritz Cron | BMW | 14 | +18.2 | 6 | |
| 3 | Bob Mitchell | Max George | Norton | 14 | +1:31.0 | 4 | |
| 4 |  Jean Murit |  Francis Flahaut | BMW | 3 | |||
| 5 | Jacques Drion | Inge Stoll | Norton | 2 | |||
| 6 | Henk Steman | Mappie de Haas | BMW | 1 | |||
| 7 | Roland Benz | Jakob Kuchler | Norton | ||||
| 8 | Loni Neussner | ? | Norton | ||||
| 9 | Hans Haldemann | Herbert Läderach | Norton | ||||
