High-temperature creep is a time-dependent phenomenon characterized by gradual, continuous deformation, affecting all metals and alloys, under the combined action of temperature and stress. This eBook will focus on typical damage morphology and inspection methods used to identify and characterize high-temperature creep. A high-level overview of creep behavior in carbon steels and other alloys will also be presented, and generally accepted temperature thresholds defining the lower boundary of the creep regime for varying materials will be discussed.