Transnistria is an unrecognized state which split off from Moldova in 1990 after the dissolution of the USSR. The region is considered by the United Nations to be part of Moldova.
Presumably for Commons purposes the laws of Moldova would be considered to apply.
Caution: The above description may be inaccurate, incomplete and/or out of date, so must be treated with caution. Before you upload a file to Wikimedia Commons you should ensure it may be used freely. Véase también: Commons:Limitación general de responsabilidad