The objectives of research were to 1) study the knowledge of waste management at Phra-Yot-Mueang Kwang fort, Nakhon Phanom province 2) study the level of waste management according to Sufficiency Economy Philosophy and 3) compare waste management according to Sufficiency Economy Philosophy in terms of personal characteristics and their knowledge of waste management. A total of 217 people in Phra-Yot-Mueang Kwang fort, were included in this study. A questionnaire method was used as a research tool for collecting data. By employing ready-made computer programs, statistics used to describe data and generate results included frequency, percentage, mean, standard deviation, t-test and one-way analysis of variance (One Way ANOVA). The study found a high level of knowledge of waste management in Phra-Yot-Mueang Kwang fort. The overall result of behavior of waste manage according to sufficiency economy philosophy of was at moderate level, with the moral and knowledge conditions were at the highest level while reasonableness, moderation and self-immunity were at moderate level. The study finally found that there was no difference among personal characteristics and the knowledge of waste management. The whole statistical analysis was realized with the use of the statistical significance level set for P<0.05. (C) 2015 The Authors. Published by Elsevier Ltd.