|Bacteriology is the branch of microbiology, which deals with the study of bacteria. They are the single celled organisms causing many harmful and lethal diseases both to animals and humans. The study of bacterial structure, shape and physiology is called as bacteriology. Most of the bacteria appear in different shapes such as oval, coccal, spiral etc.The top open access journals are peer reviewed scholarly journals Microbiology. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.