Techirghiol is a lake in Northern Dobruja, Romania. It is separated from the Black Sea coast by a narrow strip of land on which the national road DN39 (part of European route E87) and the CFR Main Line 800 run, joining the port cities of Constanța and Mangalia.
The name of the lake comes from the Turkish Tekirgöl, meaning \"Tekir\'s lake\". The name also means (in Turkish) \"Striped Lake\". This is because of the salinity of the lake; when the wind blows, white salt stripes appear on the surface of the lake.
Surface area is 11.6 km2 and max. depth 9 m.
