This monograph will provide a broad overview on silica reinforcement in NR which will be useful to NR users generally and tyre industry particularly. The introduction of silica technology in the tyre industry in our region seems vital to stay competitive in the global market. The combination of silica technology with NR will produce more environmentally friendly tyres. NR is a renewable resource material as well as an efficient CO2 sequester and it is one of the most ideal examples of sustainable energy. A better understanding of silica reinforcing mechanism in NR compounds will facilitate the further development of silica technology for NR, especially for use in highly filled silica tyre compounds.