This document provides an overview of various cephalometric analyses used in orthodontics including Downs analysis, Steiner analysis, Tweed's analysis, McNamara analysis, and Wits appraisal. For each analysis, the document lists the skeletal and/or dental components that are measured and used to evaluate dental and facial proportions. The document is a reference guide for orthodontists and contains no analyses of any particular patient cases. It provides definitions and guidelines for different standardized orthodontic cephalometric analyses.