The 1933 Isle of Man TT saw a double victory for Stanley Woods, who won the Junior TT Race at an average speed of 78.08mi/h, heading a top three place finish for riders from the Norton marque, followed by Tim Hunt and Jimmie Guthrie.
The 1933 Lightweight TT Race was not contested by Norton and the winner was Syd Gleave riding an Excelsior motor-cycle at an average speed of 71.59mi/h. Teammate Frank Longman, the winner of the 1928 Lightweight TT Race, crashed at Glentramman Corner during the same race and died later of his injuries in hospital.
The 1933 Senior TT Race gave Stanley Woods another Junior/Senior double win. The seven-lap (264.11 mile) race was completed in 3 hours, 15 minutes and 35 seconds at an average race speed of 81.04mi/h and the works Norton's taking the first four places along with Jimmie Simpson, Tim Hunt and Jimmie Guthrie.
7 laps (264.11 miles) Mountain Course.
| Rank | Rider | Team | Speed | Time | |
|---|---|---|---|---|---|
| 1 | 81.04mi/h | 3.15.35.0 | |||
| 2 | Norton | 80.41 | 3:17.07.0 | ||
| 3 | Tim Hunt | Norton | 80.16 | 3:17.43.0 | |
| 4 | Norton | 79.49 | 3:19.24.0 | ||
| 5 | Ernie Nott | 77.91 | 3:23.27.0 | ||
| 6 | Alec Mitchell | 76.14 | 3:28.10.0 | ||
| 7 | John G. Duncan | 75.64 | 3:29.33.0 | ||
| 8 | Ginger Wood | 75.39 | 3:30.15.0 | ||
| 9 |  Henry Tyrell-Smith | Rudge | 75.34 | 3:30.22.0 | |
| 10 | Jack Williams | Norton | 74.58 | 3:32.32.0 |
7 laps (264.11 miles) Mountain Course.
| Rank | Rider | Team | Speed | Time | |
|---|---|---|---|---|---|
| 1 | Norton | 78.08mi/h | 3.23.00.0 | ||
| 2 | Tim Hunt | Norton | 78.03 | 3:23.07.0 | |
| 3 | Norton | 76.59 | 3:26.56.0 | ||
| 4 | Alec Mitchell | Velocette | 75.91 | 3:28.48.0 | |
| 5 | Henry Tyrell-Smith | Velocette | 75.46 | 3:30.02.0 | |
| 6 | Gilbert Emery | Velocette | 75.41 | 3:30.11.0 | |
| 7 | Velocette | 74.98 | 3:32.23.0 | ||
| 8 | Harold Newman | Velocette | 73.23 | 3:36.25.0 | |
| 9 | Don Hall | Velocette | 73.23 | 3:36.25.0 | |
| 10 | Ernie Thomas | Velocette | 72.82 | 3:37.05.0 |
7 laps (264.11 miles) Mountain Course.
| Rank | Rider | Team | Speed | Time | |
|---|---|---|---|---|---|
| 1 | Sid Gleave | 71.59mi/h | 3.41.23.0 | ||
| 2 | Charlie Dodson | 70.85 | 3:43.43.0 | ||
| 3 | Charles Manders | Rudge | 69.17 | 3:49.08.0 | |
| 4 | Leo Davenport | New Imperial | 69.01 | 3:49.40.0 | |
| 5 | Syd Crabtree | Excelsior | 68.45 | 3:51.33.0 | |
| 6 |  Mario Ghersi | 69.09 | 3:52.46.0 | ||
| 7 | New Imperial | 67.08 | 3:53.47.0 | ||
| 8 | Les Martin | Rudge | 66.82 | 3:53.49.0 | |
| 9 | Colin Taylor | 66.41 | 3:58.45.0 | ||
| 10 | Jock Fairweather | Cotton | 66.39 | 3:58.49.0 |