Agile Software Development Teams (ASDTs) employ agile methodologies to navigate the dynamic landscape of the software industry, responding effectively to constant change and innovation. The success of ASDTs relies significantly on the individuals’ mindset, referred to as the agile mindset (AM). Yet, a clear conceptualization of the AM remains elusive, as existing approaches do not meet scientific standards and fail to produce consistent results. This paper addresses this gap by systematically conceptualizing the AM within the context of ASDTs. Through a systematic review and evaluation of existing definitions and initial conceptualizations, we identify dimensions and consolidate insights, resulting in a comprehensive conceptualization of the AM. Our work represents a crucial step towards understanding the AM’s role in ASDTs and lays the foundation for our planned future work: the empirical validation and development of a standardized measurement instrument for the AM.