Bulgaria competed at the 2017 World Championships in Athletics in London, United Kingdom, 4–13 August 2017.
Results Men Track and road events AthleteEventHeatSemifinalFinalResultRankResultRankResultRankMitko Tsenov3000 metres steeplechase8:45.2137colspan=2 colspan=2
Field events AthleteEventQualificationFinalDistancePositionDistancePositionTihomir IvanovHigh jump2.31 3 Q–Momchil KarailievTriple jump16.5715colspan=2 rowspan=2 Georgi Tsonov16.5318
Women Track and road events AthleteEventHeatSemifinalFinalResultRankResultRankResultRankIvet Lalova-Collio100 metres11.3123 Q11.25 19colspan=2 200 metres23.0812 Q22.969colspan=2
Field events AthleteEventQualificationFinalDistancePositionDistancePositionMirela DemirevaHigh jump1.926 q1.927Gabriela PetrovaTriple jump13.9017colspan=2 Radoslava MavrodievaShot put16.9921colspan=2
References