The knowledge-action gap in conservation science and practice occurs when research outputs do not result in actions to protect or restore biodiversity. Among the diverse and complex reasons for this gap, three barriers are fundamental: knowledge is often unavailable to practitioners,to interpret, and/or difficult to use. Problems of availability, interpretability, and useability are solvable with open science practices. We consider the benefits and challenges of three open science practices for use by conservation scientists and practitioners. First, open access publishing makes the scientific literature available to all. Second, open materials (methods, data, code, and software) increase the transparency and (re)use potential of research findings. Third, open education resources allow conservation professionals (scientists and practitioners) to acquire the skills needed to make use of research outputs. The long-term adoption of open science practiceswould help researchers and practitioners achieve conservation goals more quickly and efficiently, in addition to reducing inequities in information sharing. However, short-term costs for individual researchers (insufficient institutional incentives to engage in open science and knowledge mobilization) remain a challenge to overcome. Finally, we caution against a passive approach to sharing that simply involves making information available. We advocate for a proactive stance towards transparency, communication, collaboration, and capacity building that involves seeking out and engaging with potential users to maximize the environmental and societal impact of conservation science.