The Gauja (, , ) is one of the longest rivers in Latvia, with a length of and a catchment area of . Its source is in the hills southeast of Cēsis. It first flows east and north and forms the border with Estonia for about . South of Valga and Valka, it turns west towards Valmiera, continuing southwest near Cēsis and Sigulda. The Gauja flows into the Baltic Sea northeast of Riga.

In Cesis district and Riga district the Gauja has shaped the deepest river valley in Latvia with banks up to high . This part of the Gauja valley contains numerous natural and cultural landmarks and was declared a national park (Gauja National Park) in 1973.

The Latvian-born explorer Aleksandrs Laime gave the name Gauja to the river that feeds Angel Falls in Venezuela.

Category:Rivers of LatviaCategory:Articles lacking sources (Erik9bot)

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