Forest circle
A forest circle is a term used to signify an area containing one or more (usually) demarcated and (usually) protected or resource-managed forests, for administrative purposes. The term was in use in British India, and hence India, Pakistan and Bangladesh use this term for administrative purposes.
In India
In India, the combined forests in a state are completely divided into non-overlapping forest circles for the purpose of administration and coordination, in an analogous form of dividing the political area of a state into districts. Alignment of the "circles" to political boundaries is not necessary, as forests often overlap political boundaries - but one circle cannot span more than one state.
A forest circle is broken up into one or more forest divisions.
Each circle controls the protected areas and managed resources under its jurisdiction, and is presided over by a Conservator of Forests, appointed from the Indian Forest Service.