Identity is an integral part of human beings, as it is implied in every kind of activity and interaction among individuals. The purpose of the current study was to investigate identity construction in two different written genres: bio statements and acknowledgments, across various disciplines, genders and statuses. In order to fulfill the objectives of this study, 700 articles were gathered from well-known journals, written by native speakers of English, Iranian authors, in international and domestic journals. Also, some interviews were conducted with 30 professors from two state universities in Iran to elicit their opinions about bio statements and acknowledgments. To analyze the texts, a framework presented by Hyland and Tse (2012), was used for the moves in bio statements, and Halliday’s systemic functional linguistic (SFL) was employed for processes. A different framework for moves in acknowledgments was put to use. However, the processes used to analyze acknowledgments were the same. Both genres were analyzed through recursive reading to identify various moves and processes, as statistical frequency was calculated, one-way ANOVA was run to confirm the result, and also to compare the number of moves and processes used by different groups of authors to show if there were any significant differences. The results showed that there were differences in the ways natives, nonnatives (IAIJs) and Iranians (IADJ) presented themselves through different moves and processes, showing that native authors of English talked more about their academic persona and presented themselves in detail. Regarding different factors, discipline played a major role in the ways authors chose moves and processes in both genres. Status influenced the authors’ choices in depicting an academic persona; also, there were significant differences in all moves and processes used by different authors in academic status. Although there were no significant differences in the use of moves and processes by genders, both male and female authors were influential in differentiating identities. Keywords: Identity in writing, bio statement, acknowledgment, status, move, discipline.