This is a list of rivers in Laos.^[1]

By drainage basin

This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name.

South China Sea

• Mekong
  • Xekong River
    • Vang Ngao River
    • Nam Khong River
    • Xe Namnoy River (Xe Namnoi)
      • Houay Ho River
    • Houay Tekok River
    • Xe Kaman River
      • Nam Pagnou River
      • Xe Xou River
    • Huai Het River
  • Tonle Repou
  • Dôn River
  • Banghiang River (Xe Banghiang River)
    • Sepon River (Xepon River)
    • Xe Lanong River
    • Xe Champhone River
  • Xe Bang Fai River
    • Xe Noy River
  • Nam Hinboun
    • Nam Pakan
  • Nam Theun (Kading River)
  • Nam Xan River
  • Nam Ngiep
  • Nam Ngum
    • Nam Lik
      • Nam Song
  • Hueang River (Huang River)
  • Nam Xeuang |Nam Sɯaŋ| (Xeuang River)
    • Nam Xèng (Xèng River—a tributary of the Xeuang River)
  • Nam Khan
  • Nam Ou
    • Nam Phak
  • Nam Bèng
  • Nam Tha River
    • Nam Di River

Gulf of Tonkin

• Ma River
  • Nam Sam River (Xam River)
  • Èt River
• Cả River
  • Nam Neun