This briefing paper summarises the state of current knowledge and programming on teenage pregnancy in Sierra Leone and identifies some key gaps. It goes on to propose a future research agenda on this issue that could be undertaken by Secure Livelihoods Research Consortium (SLRC) and supported by Irish Aid under its new five-year strategy for Sierra Leone. The paper is based on findings from research conducted in Sierra Leone in April 2018, as well as previous SLRC research and the wider international evidence base.