The purpose of this report is to catalog, describe, and provide information concerning existing models of the dairy sector. Many types of dairy models are listed in this report. The models vary by geographic aggregation (e.g., farm, state, regional, national, and international levels), time dimension (e.g., comparative static, annual, quarterly, monthly, weekly, daily specifications), principal application (e.g., Federal Milk Marketing Order, dairy price support program, operations analysis, etc.), computer requirements (mainframe vs. micro-computer, DOS vs. Apple), ease of use, i.e., "user friendliness," and other dimensions. The report should be useful for individuals interested in the dairy industry, public policy, or quantitative methods.