Kacoʼ (Kachok) is an Austro-Asiatic language of Vietnam.

The two dialects, Kacoʼ and Romam, are quite distinct.

Lamam (Lmam) is a clan name found among the Kaco', not a distinct language.

In Vietnam, Romam (Rơ-măm) is spoken in Le village, Mo Rai commune, Sa Thầy District, Kon Tum province (Đặng, et al.

2010:115).