Soil biological and chemical properties as well as habitat conditions alter drastically when there is a conversionfrom natural to agricultural habitat. Most nutrients available for plant growth depend on complex interaction between plantroots, microorganisms and soil fauna. The present investigation was undertaken to determine the faunal diversity underdifferent organic manures in maize ecosystem. During the study, observations on soil mesofauna viz., collembola, mites,cryptostigmatid mites, ants etc and macrofauna viz., scarabids, ants and other macrofauna (carabids, dipterans, spiders)were made. Here T9 (Vermicompost + FYM + enriched compost) recorded highest soil arthropod population followed byT7 (Vermicompost + FYM). Collembola (12.92, 10.25/100 g of soil), other mites (12.60, 10.34/100 g of soil), cryptostigmatidmites (4.58, 3.32/100 g of soil), ants (2.53, 1.74/100g of soil) and other mesofauna (7.35, 5.72/100g of soil), scarabids(24.28, 21.42/pit fall trap), ants (3.63, 2.77/ pitfall trap) and others (4.70, 3.86/ pitfall trap) in T9 (Vermicompost + FYM+ enriched compost) and T7(Vermicompost + FYM) respectively. Irrespective of the treatments, mites were the dominantgroup of mesofauna and scarabids were the dominant macrofauna