Tatana (Tatanaq) is a Sabahan language spoken in Sabah, Malaysia. Due to limited studies, it is hard to ascertain whether Tatana requires a category on its own or is considered a Bisaya variety based on its 90% linguistic intelligibility with the closely related Bisaya ethnic in Sabah. The current speakers of Tatana identify themselves as an ethnic subgroup of the Dusun people of Borneo. Jason Lobel (2013:360) classifies Tatana (along with Papar) as Murutic rather than Dusunic.
Pekkanen, Inka; Dunn Chan, Phyllis A.; Dillon, John A. (1998). Buuk do tinulisan do talu bansa' gia' = Buku frasa tiga bahasa = A trilingual phrase book; Tatana' - Bahasa Malaysia - English. Kota Kinabalu, Sabah: Jabatan Muzium Sabah. ISBN9789839638196.