This study reviews the role of Plant Growth Promoting Rhizobacteria (PGPR), Plant Growth Promoting Fungi (PGPF) and Mycorrhizal Fungi in the enhancement of rice growth and yield. A total 70 papers spanning from 1970 to 2013 was screened and noted its conclusion to enhance rice growth and yield. The mechanisms employed by microbes in enhancing rice growth and yield includes; the production of growth regulating substances, phosphate solubilization, N-fixation, cellulose degradation and side rophore production. Some microbes are also involved in cell regulation and signaling in rice plants. We can conclude that there are significant influences on the growth and yield of rice plant by microbes.