The World Health Organization and American Academy of Paediatrics recommend exclusive breastfeeding until 6 months of age, with continued breastfeeding along with complementary solid foods for up to 2 years and beyond. Despite the well-established importance of breastfeeding, Irish rates remain the lowest in Europe. Healthcare professionals’ breastfeeding knowledge and skills have a positive impact on increasing breastfeeding rates. There is limited evidence of the knowledge, attitudes or practices of general practitioners (GPs) and general practice nurses (GPNs), which is essential to breastfeeding in Ireland. The aim of this study was to evaluate the breastfeeding knowledge, attitudes and practices of GPs and GPNs in one community healthcare organisation (CHO) in Ireland. A co-designed evaluation study was used following low-risk ethical exemption (LS-LR-22-161). A modified version of a validated breastfeeding questionnaire was developed. A Project Steering Committee was established that included patient, and public involvement stakeholders. The anonymised survey was distributed via online Qualtrics platform (November 2022–February 2023). STROBE Guidelines were utilised. The overall response rate was 25.9% (n = 121) and valid responses were reported in the article. The total population size was n = 468 (GPs n = 290 and GPNs n = 178). Our pilot study identified that 42.7% (n = 47/110) of respondents never attended a breastfeeding education programme, and 53.9% (n = 55/102) identified that their knowledge could be improved. The majority of respondents, 92.9% (n = 92/99) wish to complete further education in breastfeeding. The results of this pilot study in one CHO in Ireland indicate a gap in knowledge and a need for specific breastfeeding and lactation theoretical and skills training for GPs and GPNs working in primary care to support, promote and protect breastfeeding.