The International Conference on Thin-film Processing and Application-2021 is an event to bring researchers, academicians and industrialists working in the field of thin-film processing and application together on a single platform to share their expertise on their area of work. The event would also provide an opportunity for those interested in collaborating with other researchers and industrialists working in the field of surface engineering application and processing. Also, the event would help in opening new areas of research through knowledge sharing.