The majority of market vendors at urban informal markets in Papua New Guinea are women. They face vulnerabilities related to safety, security and infrastructural support. They operate within male-dominated mediation structures where women’s contributions to mediation and market governance are often invisible. However, in this article, the authors demonstrate how women market vendors contribute to the social aspect of market governance, particularly addressing issues of law and order within Awagasi market. Through the efforts women vendors in mediation and conflict management, safety in the market and normal operation of the informal market have improved. The study involved 18 women market vendors, as well as male market vendors, at Awagasi market. It used focus group discussions, interviews and creative mapping to examine the different roles of women market vendors regarding mediation and market governance at Awagasi market. The study revealed the different roles women play in their social innovations in keeping peace and order in the market. Recognising women’s agency in conflict management can support the promotion and strengthening of safe market spaces in urban environments.