Renard (Relationships Extraction from NARrative Documents) is a Python library that allows to define custom natural language processing (NLP) pipelines to extract character networks from narrative texts. Contrary to the few existing tools, Renard can extract dynamic networks, as well as the more common static networks. Renard pipelines are modular: users can choose the implementation of each NLP subtask needed to extract a character network. This allows specializing pipelines to particular types of texts and to study the impact of each subtask on the extracted network.