This list was compiled in an effort to provide an open and accessible resource of internship, mentoring, summer school and fellowship opportunities for early career researchers (ECRs) to gain policy experience outside of academia. A live version of this spreadsheet is available at: http://tinyurl.com/spp-ecr Anyone can add to the live spreadsheet, whereas a stable version will be kept here (current as of 15th June 2018). Megan Evans (@megcevans) initiated and compiled part of the list, but several others contributed via Twitter, including: @aesutz , @Aerin_J, @ChrisCvitanovic, @CNonBiodiv , @FYIscipolicy , @Jessica_Pearson , @jessicawalsh1 , @Katrina_Mindy , @LucHoffmannInst , @margagual, @MartinaDFonzo, @mcbrisb, @Mune_rita , @NASEM_Gulf, @openresearchaus , @prueaddison, @VeraHorigue An accompanying open access journal article is available at: Evans MC and Cvitanovic C (2018) An introduction to achieving policy impact for early career researchers. *Palgrave Communications* 4(1): 88. https://doi.org/10.1057/s41599-018-0144-2