Field of Influence is a term used to describe an area of expertise or influence that an individual or organization has. It can refer to the range of activities, topics, or areas of knowledge in which a person or organization has authority or influence. The two crossword solutions for this term are SPHERE and DOMAIN. SPHERE refers to a particular area of activity, influence, or knowledge, while DOMAIN refers to an area of control, influence, or activity that is exclusive to a certain individual or organization.