In this chapter we analyze patterns in the nature of eco-innovation research. For this, we conducted different types of bibliometric analyses on Web of Science Core Collection data. The analysis reveals that eco-innovation is examined from different perspectives. These are (1) supply-side perspectives focusing on firms and industries (e.g. drivers for and barriers to eco-innovation); (2) technology-centered research (e.g. carbon capture and storage, electric vehicles, smart plugs); (3) science-based research (e.g. new materials); (4) sectoral studies (e.g. steel and iron industry, transport, information technology, food, agriculture, tourism); (5) the knowledge support element in eco-innovation (e.g. skills and training); (6) demand-side analyses (e.g. diffusion and adoption dynamics of individuals, households, firms), and (7) a policy influence perspective (the impact of policy instruments e.g. eco-labels, policy mixes). Concept-wise, we observe that the concepts of industrial ecology, industrial symbiosis, and circular economy are gaining importance as analytical lenses. Our analysis reveals differences between “eco-innovation” and “environmental innovation” research in that the latter pays more attention to policy influences and is less consumption-oriented. We also identified a shift from analysing the impact towards supply and demand side research, a shift from environmental innovations to the generative processes and dilemmas for sustainability-oriented innovations, and a rise in publications from less developed parts of the world.