The 1961 Process Technology portion of the annual Fermentation Review appeared in the 1962 Annual Review Supplement of Industrial and Engineering Chemistry. The material in that review dealt with microorganisms and the bioengineering aspects of fermentation processes. This portion of the annual Fermentation Review is concerned solely with processes. In the interests of conserving space, it is presented in tabular form. The very generous finalncial help provided by the Foundation for Microbiology to aid in the preparation of this manuscript is gratefully acknowledged.