The aim of this study was to investigate the effect of using Neuro-Linguistic Programming (NLP) techniques on English as a Foreign Language (EFL) teachers' reflective teaching. In order to do this, 30 Iranian female EFL teachers were selected. The group filled out a reflective teaching questionnaire as the pretest at the outset of the study and subsequently attended an NLP workshop. Following the end of the workshop, the teachers went back to their routine teaching program for 20 sessions and the researchers administered the same reflective teaching questionnaire as the posttest to the 30 teachers after those 20 sessions. In order to test the null hypothesis, that is to check any significant difference in the degree of the reflective teaching of the group prior to and after the treatment, a paired samples t-test was conducted. The results showed that there was a significant difference between the scores of the group at the pretest and posttest level (t=-6.976, p=0.001<0.05) meaning that NLP does significantly improve EFL teachers' reflective teaching.