Nikolay Antonov (Bulgarian: Николай Антонов, born August 17, 1968 in Razgrad) is a retired Bulgarian athlete. He started as a 200 metres sprinter, and won the 1991 World Indoor Championships. In 1993 he switched to long jump.
His personal best time was 20.20 seconds, achieved at the 1991 World Championships. This is the Bulgarian record. His personal best long jump was 8.21 metres, achieved in July 1994 in Plovdiv. This ranks him fifth among Bulgarian long jumpers, behind Ivaylo Mladenov, Atanas Atanasov, Nikolay Atanasov and Petar Dachev.
|1986||World Junior Championships||Athens, Greece||7th||100m||10.53 (wind: +0.9 m/s)|
|4th||200m||21.37 (wind: +0.2 m/s)|
|10th (h)||4 × 100 m relay||40.56|
|1988||European Indoor Championships||Budapest, Hungary||2nd||200 m||20.65|
|1990||European Indoor Championships||Glasgow, Scotland||2nd||200 m||21.04|
|European Championships||Split, Yugoslavia||5th||200 m||20.68 (wind: 0.0 m/s)|
|1991||World Indoor Championships||Seville, Spain||1st||200 m||20.67|
|World Championships||Tokyo, Japan||7th||200 m||20.59|
|1992||European Indoor Championships||Genoa, Italy||1st||200 m||20.41|
|1993||World Indoor Championships||Toronto, Canada||5th||200 m||21.20|
|World Championships||Stuttgart, Germany||6th||Long jump||7.97 m|
|1994||European Championships||Helsinki, Finland||22nd (q)||Long jump||7.63 m (wind: 0.0 m/s)|