Sergey Dyachkov (akaberekwa 28 Chivabvu 1982) muAzerbaijani aimbove mutambi wekushambira, uyo akasarudzika mumitambo yemahara. Dyachkov akakodzera kumakwikwi evarume emamita 100 akasununguka
mumitambo yeOlympic yeZhizha ya2004 muAthens, nekugamuchira nzvimbo yeUniversality kubva kuFINA, munguva yekupinda ye57.73. Akadenha vamwe vanoshambira vatanhatu muchikamu chokutanga, kubatanidza Mumtaz Ahmed ane makore 34 okuberekwa wokuPakistan. Akamhanyira kunzvimbo yechishanu muna 58.26, inopfuura hafu yechipiri (0.50) kubva panguva yake yekupinda. Dyachkov akakundikana kuenda kumasemifinal, sezvo akaisa makumi matanhatu nemanomwe kubva pavanoshambira makumi manomwe nevaviri mumatanho ekutanga.