Applying lifestyle segmentation approach, this study intends to explore the relationships between consumer lifestyles and their perceptions of CSR attributes, authenticity, and the resulting attitudes toward company. The results of an online survey with a convenience sample of 207 adults show that respondents are clustered into three lifestyle segments, namely, self-achievers , online atruists , and social-fame seekers . Subsequent one-way ANOVA and regression analysis reveal that these clusters differ from each other in their attitudes toward CSR attributes, perceptions of authenticity, and company attitudes. In addition, the effects of CSR attributes on authenticity and attitudes were found to differ among the three groups. These results imply that the understanding of lifestyle characteristics, which is based on individual value systems, helps develop segment-specific CSR campaigns and messages. Future studies need to extend the study findings to industry-specific campaigns and messages (e.g., socially controversial products). By carefully investigating the effect of altruistic value preferences attached to the perceptions of CSR campaigns can help marketers gain a formidable competitive edge in their sustainability marketing efforts.