The utilization of English recurrent word combinations--lexical bundles--play a fundamental role in academic prose (Karabacak & Qin, 2013). There has been highly limited research about comparing Turkish non-native and native English writers' use of lexical bundles in academic prose in terms of frequency, structure and functions of lexical bundles (Bal, 2010; Karabacak & Qin, 2013, Öztürk, 2014). Therefore, this current research was conducted in order to investigate the most frequently used lexical bundles in the academically published articles of Turkish non-native and native speakers of English and to investigate whether there was a significant difference between native and non-native scholars with respect to the frequency, structures and functions of English language lexical bundles. The data were collected from two corpora; 15 scientific articles of native speakers and 15 scientific articles of Turkish advanced writers. The investigation included a quantitative analysis of the use of three-word lexical bundles and a qualitative analysis of the functions and structures they serve. To be more conservative, three-word lexical bundles which occur 40 times per million words and appear in 5 different texts were described a lexical bundle in this current research. The findings revealed that Turkish non-native writers showed underuse and less variation in the use of lexical bundles in their academic prose compared to native speakers.