Breast cancer (BC) is the most common type of cancer among women worldwide, and identifying the key molecules that regulate cell metastasis is essential to improve the patients’ prognosis and developing potential therapeutic strategies. Upregulator gene 11 (URG11) plays a significant role in cancer cell motility. Despite its relevance, its role and underlying mechanism in BC remains underexplored. This study aimed to investigate the significance and mechanism of action of URG11 in BC. The results indicated a low expression of URG11 in BC and revealed that its overexpression could suppress BC cell growth and motility. Through mechanistic studies, we discovered that URG11 overexpression inhibited the Wnt/β-Catenin pathway in BC cells. In summary, URG11 overexpression could inhibit the growth and motility of BC cells by suppressing the Wnt/β-Catenin pathway, suggesting URG11 as a potential target for BC management.