To provide a connector surely preventing the loss of a holding object by enhancing connection strength of both end parts of a holding body, while easily releasing the connection of both end parts of the holding body.

This connector includes: an installation body 8 installed on an installation object; and the holding body 10 becoming an annular shape capable of holding the holding object by connecting both end parts, and has a lock means for locking both end parts of the holding body 10 in a connecting state and a release operation part 40 for releasing a lock by the lock means.