Thermal Analysis deals with the theories of thermal analysis (thermodynamics, irreversible thermodynamics, and kinetics) as well as instrumentation and techniques (thermometry, differential thermal analysis, calorimetry, thermomechanical analysis and dilatometry, and thermogravimetry). Applications of thermal analysis are also described. This book consists of seven chapters and begins with a brief outline of the history and meaning of heat and temperature before listing the techniques of thermal analysis. The reader is then introduced to the basis of thermal analysis, paying particular attention to the macroscopic theories of matter, namely, equilibrium thermodynamics, irreversible thermodynamics, and kinetics. The next chapter discusses thermometry, focusing on the international temperature scale and the techniques of measuring temperature. Examples of heating and cooling curves are linked to the discussion of transitions. The groundwork for a detailed understanding of transition temperature is given. The chapters that follow explore the principles of differential thermal analysis, calorimetry, thermomechanical analysis and dilatometry, and thermogravimetry. This book is intended for the senior undergraduate or beginning graduate student, as well as for the researcher and teacher interested in thermal analysis.