The 1983 National League was the second tier of motorcycle speedway racing in the United Kingdom.
Ellesmere Port Gunners dropped out of the league despite reaching the previous season's KO Cup final and assurances by promoter Richard Park that the team would continue racing at Thornton Road amidst rising costs.
The winning team was Newcastle Diamonds.
After the tragedy of losing a rider the previous season Milton Keynes endured a second loss when their rider Craig Featherby was killed in a crash at Peterborough in a National League match on 16 September. Featherby hit a lamp standard after being thrown from the bike.
The 1983 National League Knockout Cup was the 16th edition of the Knockout Cup for tier two teams. Exeter Falcons were the winners of the competition.
First round
Second round
Quarter-finals
Semi-finals
First leg
Second leg
Exeter were declared Knockout Cup Champions, winning on aggregate 96âÂÂ95.
Steve McDermott won the Riders' Championship, sponsored by the FSO Cars and held at Wimbledon Stadium on 24 September 1983.
The National League Pairs was held at Hyde Road on 4 June and was won by Weymouth Wildcats for the second consecutive season.
Semi finals
Final
Newcastle Diamonds won the fours championship final for the second successive year, held at the East of England Arena on 24 July.
Semi finals
Final
Berwick
Boston
Canterbury
Crayford
Edinburgh
Exeter
Glasgow
Long Eaton
Middlesbrough
Mildenhall
Milton Keynes
Newcastle
Oxford
Peterborough
Rye House
Scunthorpe
Stoke
Weymouth