In Vietnam. the Khmer people lives mainly in southern Vietnam. The Khmer's culture harmonizes between traditional culture, Brahmanism culture and Theravada culture. The stamp of Brahmanism. that are the remnants compared with Buddhism, still expressed quite strong in sculptural art in pagodas. the art of theatrical performances, literature, worship. customs and habits of the Khmer people in southern Vietnam. One of the cultural images of the Brahmin religion in the Khmer cultural life is "Yak'" image. This is a unique and special image carries symbolic significance. In literature and art. "Yak" appears as a symbol of evil causing suffering for people. In contrast. in the religious life as well as in the sculpture of the Khmer pagoda. "Yak" appears as gods to protect the people and the pagoda.