Jaak De Boever (born 29 August 1937) is a Belgian former professional racing cyclist. He won the 1968 E3 Harelbeke.
Major results
1961
1st Tielt–Antwerpen–Tielt
1st Omloop der Zuid-West-Vlaamse Bergen
1962
1st Tielt–Antwerpen–Tielt
1st Stadsprijs Geraardsbergen
1963
2nd Omloop van het Leiedal
2nd Ronde van Oost-Vlaanderen
2nd Antwerpen - Ougrée
1964
1st Tielt–Antwerpen–Tielt
1st Omloop van Midden-Vlaanderen
1st Stage 2b Dwars door Vlaanderen
3rd Circuit des Frontières
1965
1st Stadsprijs Geraardsbergen
1st
1st Stage 2b Tour du Nord
2nd Tielt–Antwerpen–Tielt
2nd Omloop van het Houtland
1966
1st
1st Tielt–Antwerpen–Tielt
1st Nokere Koerse
3rd Overall Tour du Nord
3rd Omloop Mandel-Leie-Schelde
3rd Grote Prijs Marcel Kint
6th Grand Prix Cerami
1967
1st GP Stad Vilvoorde
2nd Nokere Koerse
3rd Ronde van Oost-Vlaanderen
5th Overall Paris–Nice
8th Gent–Wevelgem
1968
1st 1968 E3 Harelbeke
2nd Stadsprijs Geraardsbergen
10th Gent–Wevelgem
1969
1st Stage 1b Critérium du Dauphiné Libéré
1st Stage 4 Four Days of Dunkirk
1st Circuit de la Région Linière
2nd Omloop van Centraal-Vlaanderen
3rd De Kustpijl
1970
1st Stage 5a Critérium du Dauphiné Libéré
2nd Grote Prijs Marcel Kint
1972
3rd Omloop van het Houtland
3rd GP Stad Vilvoorde
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