This document is the 2014 catalogue for Trans Tech Publications Inc., which publishes online journals and book series related to materials science and engineering. It provides information on the various online periodicals and book series published on their websites www.ttp.net and www.scientific.net. It also includes summaries and ordering information for several recent publications covering topics such as advanced materials, nanotechnology, composite materials, and manufacturing engineering. The catalogue promotes the many publications available and provides details for interested researchers to publish or find relevant content.