This contribution outlines the many possibilities to search for hints of dark matter and other dark sector particles with the Belle II detector. The Belle II experiment started data taking in 2018 and will resume in 2019 after all sub-detectors have been installed. Upgraded detector systems, especially new capabilities of the Level-1 hardware trigger, will enable the search for signatures which were challenging to perform at the previous generation B-Factories. This paper describes the search strategies for Dark Photons, Axion-like particles and low mass dark matter candidates with Belle II and the projected limits that can be achieved after the first years of data taking.