A connector includes a housing having a sidewall portion, a first bottom portion protruding from the sidewall portion, and a second bottom portion protruding from the sidewall portion and facing the first bottom portion and, a contact terminal disposed in an internal space of the housing. The sidewall portion includes a first partial sidewall portion having a first width and a second partial sidewall portion having a second width different from the first width. The sidewall portion, the first bottom portion, and the second bottom portion define the internal space.