Tech Open Air is Europe’s leading interdisciplinary technology festival. TOA's mission is to connect, grow and inspire the human spirit through interdisciplinary knowledge exchange and collaboration.

Tech Open Air (often abbreviated as "TOA") is an annual interdisciplinary technology festival that takes place in Berlin, Germany. It started in 2012 as the very first tech festival organised through crowdfunding. The festival has developed into a well-known tech conference in and out of Europe. The main concept behind Tech Open Air is to bring together the areas of technology, music, art, and science by providing a platform for multi-disciplinary knowledge exchange, collaboration, and development. Tech Open Air is organised every year in June or July and gathers a number of influential speakers, entrepreneurs, artists, scientists, start-ups, and attendees from Germany and 55+ other countries.