Researchers have decried the limited supply of objective, comparable firm-level data from developing countries. The author describes a new database that helps fill this information gap. The database has detailed records on 4000 firms operating in Indonesia, the Republic of Korea, Malaysia, the Philippines, and Thailand. A comparable survey instrument and sampling methodology was used in each country, and all five studies were carried out simultaneously. The data cover three years (1996-98), allowing for measurements of firm performance before and immediately after the East Asian financial crisis. The questionnaire focused on measuring the impact of the regional financial crisis at the microeconomic level and understanding the longer-run determinants of productivity, employment practices, and financial structure. This database--the first step in the important Firm Analysis and Competitiveness Surveys initiative that the World Bank is spearheading--will be joined by additional country databases. The aim is to fill the gap in much-needed microeconomic evidence using comparable instruments.