Plasma Technology has a large potential to support catalytic processes in two respects. Firstly, plasmas enable chemical processes with high activation energies and can be used for the conversion of gases or the modification of liquids. The inclusion of catalytic surfaces in such plasma-chemical processes can enhance their selectivity and/or efficiency. Secondly, plasma surface engineering makes the deposition and tailoring of dedicated catalytic layers possible. To bring plasma and catalyst together, we have to learn more about the correlation between basic mechanisms of plasma-surface interaction, their interplay and to explore the possibilities of new materials.