A connector between a windscreen wiper and a drive arm, with the wiper extending in a longitudinal direction, and the connector being capable of being installed in a free end of the arm, includes an attachment part equipped with a housing open towards a bottom and allowing removable attachment according to a vertical direction of the wiper with the connector, and elastically deformable locking means having a portion that is capable of ensuring locking in the longitudinal direction of the connector in an installed position thereof in the free end of the arm. The attachment part is designed to cooperate with an installation element other than the locking means and is permanently fixed to the wiper. The locking means comprise a tab that extends in the longitudinal direction.