This scoping review mapsresearchethics and integrity challenges and best practices encountered byresearch actors in the DACH countries (Germany, Austria, and Switzerland), including researchers, funders, publishers,researchethics committees, and policymakers, during the COVID-19 pandemic. The COVID-19 pandemic broughtresearch and, in turn,researchethics and integrity, into public focus. This review identified challenges related to changingresearch environments, diversity inresearch, publication and dissemination trends, scientific literacy and (...) trust in science, recruitment,research redundancy and study termination, placebo and human challenge studies, data management, and informed consent. These challenges are linked to two crucial factors: first, actors in the DACHresearch ecosystem lacked a sound knowledge base to assess the risks and benefits ofresearch during the COVID-19 pandemic. Second, researchers in the DACH region faced pressure from policymakers, funders, and the public to generate relevant, timely, and consistent findings to mitigate the impacts of the COVID-19 pandemic. In addition, this review highlights best practices to mitigate the effects of future crises onresearchethics and integrity, including enhanced cooperation among actors, continuousethics assessments, and support for public scientific literacy. (shrink)