The purpose of this research is to conduct a Systematic Literature Review to identify organizational excellence methodologies (OEMs) from the state of the art literature, classify them based on their business sector, generate a unified list of organizational excellence (OE) critical success factors (CSFs), and propose future research agenda. A comprehensive analysis conducted on publications/year, publications/journals, journals' rank, research methods, business sector, publications' research area, and much more. The analysis reveals the identification of 46 OEMs, a unified list of 47 OE CSFs, and proposing future research agenda that include testing OEMs in the same business sector but in different countries, regions, or even different business sectors; conducting longitudinal studies on OEMs research scope; developing OEMs for the public sector and NPOs; studying the OE aspects in the MENA region; the researchers from the MENA, Africa, Malaysia, China, and the USA should put more effort to contribute to the OE scope; exploring the OE CSFs, barriers, and challenges on the different levels, business sectors, and geographical locations; testing the importance of the unified list of CSFs for organizational performance; developing a methodology to facilitate OEMs adaptation process; integrating some of the OEMs that never integrated before and test their impact on organizations' performance; integrating the sustainability concept with the BEMs or OE concept; studying the OE applications in the new era of digitization, globalization, the Internet of Things, and industry 4.0; and proposing a methodology or framework to maintain an excellent performance level beyond the implementation stage.