"Thinking beyond national borders – Research and funding across boundaries" highlights some of the key takeaways from the 2018 EFC Research Forum conference, hosted by the VolkswagenStiftung in Hanover, Germany. The event looked at how philanthropic organisations can overcome such boundaries and what they have to gain in doing so. The conference explored the following questions through workshops, panel discussions and keynote addresses: In what ways is international collaboration in research important? What can we learn from philanthropic organisations that have long experience of international grantmaking? What is the future of science policy in Europe, what institutional tools are needed, and how can science diplomacy help us? This report covers the main themes arising from the conference from the perspectives of researchers, funders and institutions.