Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.

Indonesian Sign Language is any of several related deaf sign languages of Indonesia, at least on the island of Java. It is based on American Sign Language, with local admixture in different cities. Although presented as a coherent language when advocating for recognition by the Indonesian government and use in education, the varieties used in different cities may not be mutually intelligible.