The 1984 British Speedway Championship was the 24th edition of the British Speedway Championship. The Final took place on 20 June at Brandon in Coventry, England. The Championship was won by Kenny Carter, with Andy Grahame edging out Dave Jessup for second place.
Marvyn Cox won the British Speedway Under 21 Championship. The final was held at Kingsmead Stadium on 2 June.