This paper extricates ethno-tribal diversity management in secular organizations inNigeria. The paper bears the intellectual traditional status of the sociology of social behaviouralproblem confronting the collective existence of Nigeria, at least in the collective harmoniousexistence in secular work organizations. Thus the paper provides an organizational behaviorrecipe to the management of ethno-tribal diversity related challenges in Nigeria. The paper adoptinterpretive paradigm to discuss the problems of ethno-tribal diversity dysfunctionalities.Adopting an optimistic disposition, the paper viewed dysfunctional outcome of ethno-tribaldiversity in the workplace as almost natural, as inevitable and endemic conflict tendencies thatcan be handled through the use of processes and programs to make everyone more aware of andsensitive to the needs and differences of others. The paper contended that through the use ofresolution and stimulation techniques, desired level of conflict can be attained in organizationsembedded with ethno-tribal diversity-based conflict.