Malcolm Ernest Uphill was a Welsh professional motorcycle racer. He competed in British national-level short-circuit and in Grand Prix motorcycle racing. Uphill was the first competitor in the Isle of Man Tourist Trophy races to achieve a 100 mph average lap speed on a production motorcycle.

The Isle of Man TT or Tourist Trophy races are an annual motorcycle racing event run on the Isle of Man in May and June of most years since its inaugural race in 1907. The event begins on the UK Spring Bank Holiday at the end of May and runs for thirteen days. It is often called one of the most dangerous racing events in the world as many competitors have died.