The Březná is a river in the Czech Republic, a left tributary of the Moravská Sázava River. It flows through the Olomouc and Pardubice regions. It is 31.8 km (19.8 mi) long.

The Březná originates in the territory of Malá Morava in the Hanušovice Highlands at the elevation of 850 m (2,790 ft) and flows to Hoštejn, where it enters the Moravská Sázava River at an elevation of 308 m (1,010 ft). It is 31.8 km (19.8 mi) long. Its drainage basin has an area of 130.3 km (50.3 sq mi).

The longest tributaries of the Březná are:

Tributary	Length (km)	Side
Červenovodský potok	5.8	right
Čistá	5.5	left

The river flows through the municipal territories of Malá Morava, Písařov, Červená Voda, Štíty, Jedlí, Drozdov, Cotkytle, Tatenice and Hoštejn.

The river flows through the Březná Nature Park, named after the river. The Březná River creates distinct, deep and symmetrical valleys in the nature park.

The spring of the river is called Rudolf Spring. It is a tourist destination. The water coming out of the spring is slightly radioactive.

• List of rivers of the Czech Republic

• River flow at Hoštejn station – Flood Warning and Forecasting Service of the Czech Hydrometeorological Institute