The aim of the study is to conduct the validity-reliability study of mobile learning readiness scale (MLRS) developed by Cheon, Lee, Crooks, and Song (2012) in the framework of the theory of planned behavior by adapting it to Turkish. The participants determined using convenience sampling method consist of 344 pre-service science teachers studying at two different faculties of education (Nevsehir Haci Bektas Veli University and Kirsehir Ahi Evran University) in the spring semester of 2018-2019 in Turkey. The construct validity of the scale adapted to Turkish was carried out via the Confirmatory Factor Analysis (CFA) method. The reliability of the scale was tested by computing Cronbach's alpha (a) as internal consistency levels. It was found that the level of internal consistency value was 0.93 and sub-factors of MLRS were at a good level. In conclusion, the Turkish version of the MLRS in the framework of the theory of planned behavior consists of four main factors including attitude, subjective norm, perceived behavioral control, and intention and three external beliefs including Attitudinal Beliefs (Perceived Ease of Use, Perceived Usefulness), Normative beliefs (Instructor Readiness, Student Readiness), and Control beliefs (Perceived Self-efficacy, Learning Autonomy) as in the original model.