This article offers a typological overview of the Emerillon language, a Tupí- Guaraní language spoken by a small community in French Guiana. General information is provided on various aspects of the grammar, within the domains of phonology, morphology, and syntax. Special attention is given to a few features of the language that are rather rare and/or poorly discussed in the typological literature, namely morphemic nasal harmony, a hierarchical person indexation system, a rare type of nominal predication, and the existence of a specific marker for sociative causation. These features are all typical of the Tupí-Guaraní family.