A wire-end connector and a connector assembly are provided. The connector assembly includes the wire-end connector and a board-end connector. The wire-end connector includes a housing, multiple conductive wires, and multiple conductive terminals. The housing includes an insulating body with multiple apertures disposed therein, an elastic latch arm, and a flange. The flange is arranged along an outer side of a first opening, and two limiting arms are respectively formed at two end portions of the flange that are adjacent to the elastic latch arm. A midline is defined by each of first partition walls along a third direction, the two adjacent midlines are spaced apart from each other by an interval, and each of the intervals is at least twice a width of each of the first partition walls. The conductive terminals are disposed in the apertures, respectively.