The digital ecosystem makes entry into foreign markets easier and provides new ways for consumers to engage with marketing materials (through content clicking, sharing, and electronic word-of mouth behavior). While there is emerging evidence that between-country cultural differences may impact digital consumer engagement (particularly eWOM), we know far less about its impact on online advertising clicking and sharing engagement or how within-country cultural variation (tightness/looseness) moderates this activity. In this study we develop and test the notion that cultural differences between- and within-countries lead to variations in digital consumer engagement, especially clicking and sharing behavior. Based on industry data provided by a programmatic advertising firm, we find support for the idea that between-country differences in national cultural values impact digital engagement, and that within-country cultural variation moderates these relations. In this way we provide new insights for researchers and managers about international marketing in the digital age.