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Tyra (Tyrka).jpg
Tyrka in Tyra
Origin Moravian-Silesian Beskids
Mouth Olza River
Basin countries Czech Republic
Length 13 km
Source elevation 835 m
Avg. discharge 0.65 m³/s near estuary
Basin area 31 km²
This article is about river in Czech Republic. For russian syberian village, see Tyrka (village).

About this sound Tyrka  (Polish: Tyrka ) (also known as Tyra) is a 13 km long creek in Frýdek-Místek District, Moravian-Silesian Region, Czech Republic, in the historical region of Cieszyn Silesia.

It is the left tributary of the Olza River, to which it enters in Třinec. It originates in the Moravian-Silesian Beskids in the elevation of 835 m and flows generally northward through the villages of Tyra and Oldřichovice. Tyrka also flows through the territory of the Třinec Iron and Steel Works before joining Olza.


  • Cicha, Irena; Jaworski, Kazimierz; Ondraszek, Bronisław; Stalmach, Barbara; Stalmach, Jan (2000). Olza od pramene po ujście. Český Těšín: Region Silesia. pp. p. 16, 18. ISBN 80-238-6081-X. 

Coordinates: 49°40′59″N 18°39′23″E / 49.68306°N 18.65639°E / 49.68306; 18.65639