There are provided a container connector that is connectable to a container having a different outer diameter and is easily connectable to the container and that is capable of stabilizing a posture in a connected state, and connection equipment including this container connector.container connector 10 includes a base in which L is formed, three or more engagement sections 30 disposed on a circle X set to the base 20, a guiding section 41 disposed continuously with the engagement section 30, and having a inner surface 41 formed as a curved surface or inclined surface inclined to an axis C3 of the circle X to guide the container 5 to the engagement section 30, and an arm 60 provided in the base 20, and movably supporting the guiding section 40 in a direction toward the axis C3 of the circle X and a direction away from the axis C3.