In this article, we explore how a posthumanist stance has enabled us to work a different consideration of the way in which "voice" is constituted and constituting in educational inquiry; that is, we position voice in a posthuman ontology that is understood as attributable to a complex network of human and nonhuman agents that exceed the traditional understanding of an individual. Drawing on the work of Deleuze and Guattari, Barad, and Bennett, we present a research artifact that illustrates how this posthuman voice is productively bound to an "agentic assemblage." The reconfiguration of a posthuman voice with/in an educational research artifact further enables us to explore various analytic questions: What happens when voice exceeds language and is more than (un)vocalized words emanating from a speaking subject? If the materiality of voice is not limited to sound (i.e. self-present language emitted from a human mouth), how do we account for it? That is, how might the materiality of voice be located in the space of intra-action among human and non-human objects? We conclude with implications for thinking qualitative methodology in education differently.