The objective of this research is to examine the influence of corporate social responsibility (CSR) in accounting practices on firm sustainability through mediating influences of accounting information disclosure, corporate reputation and respect of stakeholder benefit. Furthermore, the three factors as antecedents, namely, corporate governance awareness, executive vision for sustainability and perceived public requirement are investigated. The corporate communication is the moderating variables of this research. The key research question is how CSR accounting practices has influence on firm sustainability. A questionnaire was used as an instrument for data collection. Here, 103 accounting managers of the ISO 14000 businesses in Thailand were selected as key informants. The Ordinary Least Squares (OLS) regression analysis was employed to examine all hypotheses. The results indicated that almost every dimension of CSR accounting practices has a potential positive impact on accounting information disclosure, corporate reputation, respect of stakeholder benefit and firm sustainability. In addition, accounting information disclosure, corporate reputation, and respect of stakeholder benefit has a greater positive influence level greater on firm sustainability. Likewise, three antecedent variables have significant influence on CSR accounting practices. Finally, the moderating variables show some partial support for the hypotheses derived from the conceptual model.