The 9th British Empire Trophy was a Formula One motor race held on 21 August 1947 at the Douglas Circuit, in Douglas, Isle of Man.

The 40 lap race was won by Bob Gerard in an ERA B-Type, setting fastest lap in the process.

Peter Whitehead finished second in another B-Type, and Bob Ansell was third in a Maserati 4CL.

B. Bira started from pole position in his Maserati 4CL and finished fifth.

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