Ținutul Mării (alternatively spelled as Marea or Mărei) was one of the ten ținuturi ("lands") of Romania, founded in 1938 after King Carol II initiated an institutional reform by modifying the 1923 Constitution and the law of territorial administration.

It was named after the Black Sea, and had its capital in the city of Constanța.

Ținutul Mării ceased to exist following the territorial losses to the Kingdom of Bulgaria and the king's abdication in 1940.

The dexter consists of four bends, two of azure and two of or, representing the former four counties of the Greater Romania (71 in total), which it had included.

[3] After the 1938 Administrative and Constitutional Reform, of the older 71 counties, Ținutul Mării included 4:[4]