France
This depends on the country to the north. South of the US is Mexico. South of France is Spain. South of Turkey are Syria and Iraq. South of Denmark is Germany.
There are two countries directly east of Poland, The Ukraine and Belarus.
There is no country due south of Germany that is on the Baltic
The country directly south of Iraq is Saudi Arabia.
If you are referring to the United States, Mexico is directly south.
if you are in the USA the country directly south of you is Mexico (North America is the continent) If you are in Canada the country directly south of you is the USA
Morocco is directly south of Spain.
The country directly due south of Moscow is Ukraine.
The People's Republic of China is south of Mongolia.
Mostly Switzerland and Austria.
No country borders Italy to the south.