The Expansion of the Primeiro Comando da Capital (PCC), Its Transnational Presence, and Identification Through Criminal Symbols and Tattoos This study analyzes the expansion of the Primeiro Comando da Capital (PCC), one of the largest criminal organizations originating in Brazil, and its growing influence in transnational organized crime networks. The research examines the historical development of the organization, its internal structure, operational methods, and strategies used to expand its activities beyond national borders. Based on investigative experience, documentary analysis, and the observation of criminal patterns, the study explores how the PCC has developed sophisticated mechanisms of coordination, communication, and financial organization. Particular attention is given to the role of the prison system in the consolidation and expansion of the group, which has historically served as a strategic environment for recruitment, communication, and organizational control. The paper also discusses evidence suggesting that the organization has expanded its operational interests beyond Latin America, including connections with transnational criminal networks that may reach the United States through activities such as drug trafficking, money laundering, and logistical support networks. In addition, the research briefly examines the use of tattoos, symbols, and coded markings associated with members of the organization. These visual identifiers can function as indicators of affiliation, status, or ideological alignment within criminal networks and may provide useful insights for criminal intelligence and investigative practices. By examining these dynamics, the study contributes to a broader understanding of organized crime structures in Latin America and their potential expansion into international territories. The findings highlight the importance of coordinated institutional responses, intelligence sharing, and international cooperation in addressing the challenges posed by transnational criminal organizations. KeywordsOrganized CrimePCCTransnational CrimeCriminal SymbolsCriminal Intelligence