This curated dataset provides a comprehensive and high-fidelity record of the judicial executions carried out in the United States during the year 1999, which represents the historical peak of capital punishment activity in the modern era. Unlike generic data lists, this resource is the result of a rigorous process of digital curation and technical validation. It captures the complete universe of 98 records, documenting key variables such as demographic profiles (age, gender, ethnicity), legal jurisdiction (state), and the specific methodology of the execution, along with a detailed classification of the underlying criminal offenses. A core value of this collection is its technical and structural integrity. The dataset has been engineered to meet the highest standards of data science: it features a verified ASCII encoding (1.0 confidence) and follows the RFC 4180 standard for handling complex text fields (such as multiple criminal charges). This ensures seamless interoperability across different analytical environments, preventing common parsing errors in professional workflows.