This study investigated the use of lexical bundles in research articles written in English by Turkish scholars. For the purpose of the study, a corpus of published research articles produced by Turkish scholars in six different academic disciplines was collected. The four-word lexical bundles that appeared at least twenty times in this one million word corpus were identified and further analyzed both structurally and functionally based on the previous taxonomies developed by Biber, Johansson, Leech, Conrad and Finegan (1999) and Biber, Conrad and Cortes (2004). The results of this study revealed that the lexical bundles found have structural correlates as well as strong functional features that help to construct discourse in academic writing. The conclusions drawn from this study could be applied to the teaching of academic genres to researchers in English as a Foreign Language context and are expected to provide insights for further corpus-based studies in academic writing.