Blatno may refer to places:
Czech Republic edit
- Blatno (Chomutov District), a municipality and village in the Ústí nad Labem Region
- Blatno (Louny District), a municipality and village in the Ústí nad Labem Region
- Blatno, a part of Hlinsko in the Pardubice Region
Slovenia edit
- Blatno, Brežice, a settlement in the Municipality of Brežice