This study examines the patterns and antecedents of firms' value chain greenhouse gas emissions (VCGGE) awareness. Drawing on a sample of 1,322 firms from multiple countries and industries, we use cluster analysis to first evaluate how well firms' VCGGE awareness patterns match traditional value chain integration patterns, identified by prior literature. We then examine how well internal indicators of greenhouse gas emissions (GGE) management predict advanced VCGGE awareness. Our study indicates that VCGGE patterns partially match traditional value chain integration patterns and that firms' VCGGE awareness is much higher for their upstream than downstream activities. Moreover, our findings show that the internal adoption of GGE management is a significant predictor of advanced awareness of VCGGE. Overall, we find that most firms have limited awareness about the magnitude of their VCGGE, suggesting that many opportunities to reduce these emissions, especially in the downstream value chain, remain unexplored.