The current study sought to investigate the relationship between critical thinking and speaking ability among EFL students at Payame Noor University (PNU) of Rasht. This research concerned determining the fact that whether language students who are as critical thinker, perform better in their speaking ability or not. In order to answer the research question and test the hypothesis, 100 PNU English students were selected by applying IELTS speaking test as the samples of this study. Then in order to figure out critical and uncritical learners, Lauren Starkey Critical Thinking Test including 30-multiple choice item was administered to the participants. After that, based on the obtained data and due to lack of normal distribution, Spearman non-parametric correlation was employed. The findings of the current study revealed a significant correlation coefficient among these two major variables. In fact, those English learners who were recognized as critical thinkers performed better in their speaking.