Dördyol may refer to:

• Birinci Dördyol, Azerbaijan
• İkinci Dördyol, Azerbaijan

• Hysterocladia
• Hystero Contrast Sonography
• Hysterocrates
• Hysterographium
• Hysteroneura setariae
• Hysteronotus
• Hysteronotus megalostomus
• Hysterophora maculosana
• Hysterophorus
• Hysteropterum
• Hysterosia alphitopa
• Hysterosia angulatana
• Hysterosia aureoalbida
• Hysterosia baracana
• Hysterosia birdana
• Hysterosia canariana
• Hysterosia cartwrightana
• Hysterosia coreana
• Hysterosia cornigera
• Hysterosia decipiens
• Hysterosia dicax
• Hysterosia dodrantaria
• Hysterosia fermentata
• Hysterosia gigantica
• Hysterosia hemiacta