Provided is a connector capable of reliably allowing flow paths of a male connector and a housing to communicate with each other without causing the tip end of the male connector to penetrate a valve, and suppressing or preventing a slit of the valve from being torn. The connector includes a housing and a valve. The housing includes a flow path and a male connector connecting portion communicating with the flow path. The valve is formed in a substantially columnar shape, and has a top surface exposed from the male connector connecting portion, a bottom surface opposite to the top surface, and a slit opened at least on the top surface or the bottom surface. The housing has a stopping portion which is engaged with the tip end of the male connector to define the insertion length of the male connector.
