Look up sphere of influence in Wiktionary, the free dictionary.
Sphere of influence may refer to:
- Sphere of influence (astrodynamics), the area, typically spherical, around a celestial body, e.g. a star, in which that body is the biggest gravitational influence
- Sphere of influence (black hole), a region around a black hole in which the gravitation of the black hole dominates that of the host bulge
- Sphere of influence, an area or region over which a state or organization has significant cultural, economic, military or political influence
- Sphere of influence is also a legal term in family law. A child can only be emancipated in some states when he or she goes outside of the sphere of influence of the parents, e.g. no longer needs their financial support.
- Nobunaga's Ambition: Sphere of Influence, a 2013 Japanese turn-based strategy video game
- "Sphere of Influence" (Star Wars: The Clone Wars)