The studies on creating learning environments based on differences in learning styles have gained importance in recent years. Learning styles are one of the most important parameters in determining individual differences. Accordingly, traditional web-based learning environments have been replaced by individualized adaptive e-learning environments on the basis of learning styles which are more innovative. This study deals with the content analysis of the recent studies on Adaptive Educational Hypermedia (AEH) based on learning styles. 69 articles published from 2005 to 2014 were obtained through a comprehensive and detailed review. Afterwards, these studies were subjected to document analysis. The studies were categorized under the titles of purpose, nature, method, characteristics of examinees, level, data collection tool, learner modelling, learning styles, subject, and findings. Some of the studies offered a framework or proposed a model for AEH while others focused on the influence of AEH on academic achievement and learning outputs as well as learning satisfaction. This study examines the existing tendencies and gaps in the literature and discusses the potential research topics. (C) 2015 Elsevier Ltd. All rights reserved.