The current study aims at finding out the effect of pair writing technique on Iraqi English as a foreign language university students' writing performance and anxiety. The sample of the study includes 78 male and female students in the Department of English / College of Education Ibn Rushd for Human Sciences of the University of Baghdad, Iraq during the academic year 2016/2017. The sample is divided into a control group with 38 students and experimental group with 40 ones. After checking the equalization of the two groups in certain related variables, the researchers conduct the experiment in which the students in the experimental group are taught writing and practice it in pairs, while those in the control group are dealt with conventionally (individually). The data collection tools employed in this study; a writing posttest and second language writing anxiety inventory, are conducted on the sample at the end of the experiment. The results achieved are statistically manipulated and discussed according to which a number of conclusions are drawn, and a set of recommendations are put forward.