pynxtools-igor is a reader plugin for pynxtools (https://github.com/FAIRmat-NFDI/pynxtools) written in Python. pynxtools-igor is a free, and open-source data software for converting data stored with Wavemetrics [Igor Pro](https://www.wavemetrics.com/) into the [NeXus](https://www.nexusformat.org/) format. It allows to read, translate, and standardize data from Igor Pro binary waves and packed experiment files. Depending on the domain of data, pynxtools-igor allows to ensure compliance with various NeXus application definitions. pynxtools-igor is developed both as a standalone reader and as a tool within NOMAD, an open-source data management platform for materials science ((https://nomad-lab.eu/nomad-lab/). The work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - 460197019 (FAIRmat) (https://gepris.dfg.de/gepris/projekt/460197019?language=en).