AbstractRare Earths have been of considerable interest in recent years for a variety of reasons, in particular due to concerns over the security of supply for modern high efficiency electronics and energy technologies. Such concerns have placed them among the list of “critical” or “strategic” elements in countries such as the United States of America, the European Union, Japan and even in the largest producer and holder of reserves, China. Focus has been given to the environmental impacts of production, and on the distribution of reserves and politico-economic conflict over supply, but international academic work quantifying these impacts is lacking. Moreover, broader consideration of sustainability impacts and benefits in a systematic manner – particularly in regard to the social impacts of RE extraction, processing and utilisation – is not yet apparent.This paper undertakes a review of the literature and state-of-play of sustainability assessment of rare earth elements. Furthermore, the paper highlights areas of sustainability research considered by academic and industrial representatives to be essential for filling these gaps, and a pathway forward towards a more sustainable rare earths industry.