Poland and Latvia are both countries located on the Baltic Sea. POLAND is a country in Central Europe, bordered by Germany to the west, the Czech Republic and Slovakia to the south, Ukraine and Belarus to the east, and Lithuania and the Kaliningrad Oblast of Russia to the northeast. Latvia is a country in the Baltic region of Northern Europe, bordered by Estonia to the north, Lithuania to the south, Russia to the east, Belarus to the southeast, and the Baltic Sea to the west.