• Archar
• Arda
• Batova reka
• Bistritsa
• Byala reka (Bulgarian: White river)
• Danube
• Deleynska reka
• Dospat
• Dzhulyunitsa
• Erma
• Fakiyska reka
• Iskar
  • Cherni Iskar
  • Palakariya
• Kamchiya
  • Golyama Kamchiya (Bulgarian: Big Kamchiya)
  • Luda Kamchiya (Bulgarian: Crazy Kamchiya)
• Krumovitsa
• Lebnitsa
• Lom
  • Beli Lom (Bulgarian: White Lom)
  • Cherni Lom (Bulgarian: Black Lom)
• Luda Yana (Bulgarian: Crazy Yana)
• Maritsa
• Matevir
• Mechka (Bulgarian: Bear)
• Mesta
  • Bela Mesta (Bulgarian: White Mesta)
  • Cherna Mesta (Bulgarian: Black Mesta)
• Ogosta
• Osam
• Provadiyska reka (Bulgarian: River of Provadia)
• Pyasachnik (Bulgarian: Sandstone)
• Ropotamo
• Rusokastrenska reka (Bulgarian: River of Rusokastro)
• Sazliyka
• Shirokolashka reka (Bulgarian: River of Shiroka Laka)
• Stara reka (Bulgarian: Old river)
• Struma
  • Rilska reka
• Strumeshnitsa
• Stryama
• Suha reka (Bulgarian: Dry river)
• Topolnitsa (in Bulgarian, Topola means poplar)
• Tsibriditsa
• Tundzha
• Vit
  • Beli Vit (Bulgarian: White Vit)
  • Cherni Vit (Bulgarian: Black Vit)
• Voynishka reka (Bulgarian: Soldier's river)
• Vacha
• Varbitsa
• Veleka
• Yantra
  • Rositsa
• Zlatna Panega (Bulgarian: Golden Panega)

See also: