In the Second Language Acquisition field, there is a growing body of research that aims to characterize the interactional competence development of foreign language (L2) learners in terms of how they increasingly organize their interaction with more precision and with a wider variety of practices (Pekarek Doehler, 2019). In addition, Interactional Linguistics assumes that the characteristics of a certain language may affect how interaction is held in that language (Couper-Kuhlen & Selting, 2018). To date, little is known about how Japanese students of Spanish as a Foreign Language (ELE) conduct everyday conversation in the L2. In the present study, I analyze turn-taking practices, a central system for organizing oral interaction, in dyadic conversations between Japanese learners of ELE. I focus on the more complex social actions participants perform using deviant turn-taking practices. The analysis is guided by a classification of turn-taking practices proposed by Cestero Mancera (2000a, 2005) for conversations held in Spanish by native speakers. In the core of the article, I present and discuss examples of how Japanese learners of ELE, when maintaining a conversation in the L2, perform actions such as starting the conversational turn before the other speaker’s ongoing turn reaches a possible completion, commenting on and asking about the content of the other speaker’s ongoing turn at relevant places, completing the other speaker’s turns cooperatively, interrupting the course of the sequences, and managing contingencies such as simultaneous turn beginnings. These findings support the use of Cestero Mancera’s categories in future research.