Alpha spectrometry is widely used in environmental monitoring and nuclear-related industries. This module provides an introduction to the underlying theoretical principles and practical aspects of alpha spectrometry. These include of the origins of alpha emitters; the interaction of alpha particles with matter and the consequences for alpha spectrometry; an introduction to sampling strategies and spectrum analysis techniques; and commonly used chemical separation procedures and methods of source preparation. There is a strong emphasis on practical laboratory work using modern industry-standard alpha spectrometers in which key concepts covered in the lectures are demonstrated.