This chapter presents a range of techniques for measuring imitation of others’ movements. We consider methods that measure imitative activity during passive action observation; kinematic measures of imitation; stimulus-response compatibility measures of automatic imitation and imitation-inhibition; and more naturalistic measures of mimicry and action synchrony. Throughout the chapter, we discuss the strengths and limitations of these approaches and conclude with a summary of considerations to bear in mind when choosing an experimental technique, or reviewing work involving such measures.