We present TensorFlow MRI, a new open-source library of TensorFlow operators for MR image reconstruction and processing. Its goal is to enable fast prototyping of modern MRI applications within a single computing framework. It is intended for researchers working in MR image reconstruction and/or processing, especially those interested in ML applications. The library is primarily Python-based and is easy to use, understand and extend. It has a single-command installation procedure and extensive documentation. Thanks to the use of a TensorFlow backend, it has excellent performance and runs on heterogenous and distributed systems.