<p>People with attachment anxiety frequently experience problems in social relationships and tend to form a strong attachment toward material objects as a substitute for their interpersonal insecurities. However, the underlying mechanism linking attachment anxiety with material values is not well-defined. We propose that anxiously attached people are more prone to avoid thoughts, feelings, and experiences, thereby leading to greater material values. In three correlational studies and a preregistered experiment conducted across Russian, Turkish, Polish, and U.S. samples (<i>N =</i> 1,397), we investigated whether experiential avoidance mediates the link between attachment anxiety and material values. The indirect effect of attachment anxiety on material values through experiential avoidance was consistently significant across all studies. In Study 4, we also demonstrated that inducing attachment anxiety (vs. negative affect) led to a suppression of unwanted experiences, feelings, and thoughts, resulting in more material values. We suggest that interventions focused on secure relationships may enhance anxiously attached individuals’ action strategies, potentially reducing their material values, with implications for the literature on attachment styles and material values as well as broader models of social and clinical psychology.</p>