Recent years have witnessed a substantial increase in the use of methods from algebraic and combinatorial topology in research within sciences and engineering, including in data analysis, visualization, image processing, robotics, and more broadly in theoretical computer science, biology, medicine, and social sciences. Frequently, structural topological insights are needed in the discovery and analysis of fundamental mechanisms in applications. The investigation of large data sets often requires development of new algorithms, which in turn depend on mathematical insights. The Journal of Applied and Computational Topology is devoted to publishing high-quality research articles bridging algebraic and combinatorial topology on the one side and science and engineering on the other. It aims to serve both mathematicians and users of mathematical methods. We invite research contributions: from within the sciences, with focus on essential uses of topological methods and, from within topology, with a strong applied component or motivation from science and engineering. We particularly encourage the submission of topical surveys and expository articles. AMS Mathematical Citation Quotient: 0.73 (2020).