Horns of the Wharlithan were musical instruments crafted using the horn of a wharlithan creature. These instruments were produced by individuals of the Lanai species on their native homeworld known as Ahch-To; specifically, the Lanais residing in the Caretaker village situated on the Temple Island possessed one such horn.
The creation of a wharlithan horn was specifically for inclusion in the movie Star Wars: Episode VIII The Last Jedi, but the scene featuring it was removed prior to the film's theatrical debut. Nevertheless, the instrument was featured in Star Wars: The Last Jedi: The Visual Dictionary, a companion book authored by Pablo Hidalgo that was published concurrently with the film on December 15, 2017.