Alesis Digital Audio Tape or ADAT is a magnetic tape format used for the simultaneous digital recording of eight analog audio or digital audio tracks at once, onto a Super VHS tape that is used by consumer VCRs.

Adat (Jawi: عادة) in Indonesian-Malay culture is the set of cultural norms, values, customs and practices found among specific ethnic groups in Indonesia, the southern Philippines and Malaysia. For instance pakaian adat, or adat clothes, refers to the traditional clothing of a specific people.