A wiper device (10a-10c) is proposed comprising at least one wind deflector unit (12a-12c) and comprising at least one channel unit (18a-18c) integrated into the at least one wind deflector unit (12a-12c), and comprising at least one wiper blade adapter (20a-20c) which includes at least one adapter attachment (24a-24c) and at least one adapter base body (22a-22c) and is configured to be coupled to at least one wiper arm (110a-110c). It is proposed that the wiper device (10a-10c) comprise a fluid supply unit (38a-38c) which is configured to supply wiper fluid to the channel unit (18a-18c) and comprises at least one coupling end piece (40a-40c) for latching connection to the at least one adapter attachment (24a-24c).