Of course. Almost all of them are.
A few (like the US) have territory in three hemispheres,
and I'll challenge you to find a single country on Earth
that's located in only one or in all four of them.
No, it is not possible for a country to be located in three hemispheres as the Earth is divided into four hemispheres (Northern, Southern, Eastern, Western). Each country can only be situated in a maximum of two hemispheres.
Spain is located in both the Western and Northern Hemispheres. The majority of Spain lies in the Northern Hemisphere, while a small portion of the country's territories, like the Canary Islands, extend into the Western Hemisphere.
Europe is located in three, not two, hemispheres. The Northern, Eastern, and Western.
Florida is located in the northern and western hemispheres.
Greece is located in the Northern and Eastern hemispheres
Georgia is located in the Northern and Western hemispheres.
China is located in both the Northern and Eastern hemispheres.
Its in the North-Eastern hemispheres.
Northern and Eastern hemispheres
ALL Russia is located northern and eastern hemispheres.
Russia is located in both the Eastern and Northern Hemispheres. It spans from Eastern Europe to Northern Asia, with its capital, Moscow, situated in the European part of the country.
Arizona is located in both the Northern and Western hemispheres.