Understanding effective marketing decision-making is key to driving business performance. However, knowledge of marketing decision-making by microbusiness owners is limited. Moreover, little is known about how microbusiness owners make marketing decisions under crisis conditions. This article explores entrepreneurial marketing decision-making by women microbusiness owners during the COVID-19 pandemic, through qualitative interviews with providers of children’s activities, who migrated their services online during lockdown. Findings shed light on their marketing decision-making by highlighting transitions between causation and effectuation approaches and identifying key resources leveraged in effectuation decision-making. We also observe how distinct principles of effectuation may be combined to make effective marketing decisions. In addition, we discern interactions within networks and membership of communities of practice as collective influences on women microbusiness owners’ entrepreneurial marketing decision-making.