A wire end connector and a connector assembly are provided. The wire end connector comprises a wire end housing and an unlocking member. The wire end housing comprises a wire end accommodating part and two buckling bumps. The two buckling bumps are oppositely disposed at two sides of the wire end accommodating part, a wire end connector body is accommodated in the wire end accommodating part. The unlocking member comprises two opposite unlocking arms. The two unlocking arms being movably disposed in the two buckling bumps respectively.