The thesis titled "The Scope of the Anti-Money Laundering Office's Actions" explores the vital role of the Anti-Money Laundering Office in the Republic of Croatia. The focus is on combating complex forms of financial crime, particularly money laundering, which poses a serious threat to both the financial system and society as a whole. The work addresses the history of money laundering, its stages (placement, layering, and integration), and the methods used by criminals to conceal illicitly obtained funds, such as offshore accounts and shell companies. Special attention is given to the Anti-Money Laundering Office, whose function is to collect and analyze information on suspicious financial transactions. The office also collaborates with international bodies to combat money laundering globally. The author analyzes the legal framework regulating the Office's operations, including the Anti-Money Laundering Act and the Croatian Criminal Code. The conclusions emphasize the need for continuous legislative adjustments to more effectively combat new forms of financial crime, including the use of cryptocurrencies. Despite challenges, the Anti-Money Laundering Office plays a crucial role in safeguarding Croatia's financial integrity, making it an essential tool in the fight against international crime.