PurposeWomen-led enterprises can count on intellectual capital (IC) to implement a knowledge exchange process, improve managerial skills and provide themselves with more certain and reasonable financial resources. Recently, the literature has recognized a new paradigm of innovation, known as open innovation (OI) that emphasizes the strategic importance of relationships for knowledge development. The paper, first, aims to investigate if IC can support female agri-start-ups’ innovation process. Second, the aim is to analyse the ways in which IC supports female agri-start-ups.Design/methodology/approachThe work uses a qualitative methodology and a multiple case study supports the paper. Data were acquired using direct semi-structured interviews. To read and interpret them, the authors resorted to the C.A.O.S. model that permits examining the direct relationships in terms of relational capital (RC) and also, observing the effect produced by the relational circuit in terms of human capital (HC) and structural capital (SC) in small and medium enterprises.FindingsFindings reveal that RC plays a fundamental role in innovative start-up's development. The S-C and S-O links support business management and help fill the gender financial gap. This leads to improving entrepreneurial skills (HC) and promoting internal innovative solutions (SC). The S-A links can help the entrepreneur acquire more awareness of the market and compete better.Originality/valueThe research contributes to IC and gender studies, with a specific focus on RC and the innovation process. Although the literature has already investigated the role of RC in female entrepreneurship, only few previous research have conducted a qualitative analysis about the relationships established in the peculiar context of innovative agri-start-ups.