This document is the NMC Horizon Report: 2014 Library Edition which discusses key trends, challenges, and emerging technologies relevant to libraries. Some of the trends discussed include increasing focus on research data management and prioritization of mobile content. Challenges include embedding academic libraries in curriculum and capturing digital research outputs. Emerging technologies that are one year or less away include electronic publishing and mobile apps, while technologies that are four to five years away include the internet of things and semantic web/linked data. The report is a collaboration between NMC and several library partners.