International or internationally describes interaction between nations or encompassing several nations. Especially in the United States, "international" is also commonly used to mean "outside of the country."

Global is commonly used nowadays as a synonym for international, but such usage is incorrect. This is because "global" implies "one world" as a single unit, while "international" recognizes that different peoples, cultures, languages, nations, borders, economies, and ecosystems exist. Nonetheless such usage is found in widely-used media buzzwords such as the "Global Economy".

In team sports, "International" commonly refers either to a match between two national teams, or to a player capped by his national team.