Within the sociology of the body, tattooing represents a distinctive manifestation of the interaction between the individual and society. The primary aim of this research is to understand the experiences, attitudes, and motivations of women and men in relation to tattooing. This study adopts a qualitative methodology and is grounded in the approach of Grounded Theory. Data were collected through in-depth, semi-structured interviews with 27 women and 25 men in Mashhad who had tattoos. The findings indicate that various factors influence the decision to engage in tattooing. Contextual conditions include age at first exposure and social familiarity with tattooing, and generational differences in attitudes toward it. Causal conditions encompass strategies for selecting tattoo placement, lived pressures, close social experiences, modeling after media figures, escape from routine, cultural perceptions of tattooing, and aesthetic perceptions of the body. Intervening conditions include occupational status, religious authority in bodily decision-making, and the degree of tattoo visibility. In addition, marital status, level of education, and place of residence play a role in the re-signification of the body and the practice of tattooing. Reported outcomes of tattooing include the expansion of social relationships, increased feelings of satisfaction, hope, pleasure, and self-confidence, a tendency toward repeated tattooing, and various forms of social feedback. The study demonstrates that tattooing in Iranian society is shaped by a wide range of social and cultural factors that influence both women’s and men’s decisions to engage in this practice.