Historically, scholars have reduced Haitian Vodou Langaj (ritual language) to African lexemes or frame it as glossolalia. Against this background, in this thesis, I examine Langaj as a liturgical and devotional language of Haitian Vodou and challenge such reductionist views. This thesis argues that Langaj should be analyzed through an Africana Religious Studies framework and a multi-semiotic perspective. By positioning Langaj as an African-derived ritual communication system, I theorize its role as a linguistic Kafou (crossroads) in Haitian Vodou specifically, and the Black Atlantic discursive space more broadly. I probe the relationship between Langaj and constructions of identity. I conclude by highlighting Langaj’s pivotal role in transmitting and preserving Haitian Vodou traditions by serving as a potomitan (vital center) and sacred repository and a method for (re)producing and transmitting traditional knowledge within devotees’ lives.