Critical thinking disposition and critical thinking skills are essential parts of critical thinking that are mutually reinforcing. This study is aimed to describe and examine the relationship between critical thinking dispositions and critical thinking skills of pre-service science teachers. In this research, the quantitative descriptive method is utilized. Fifty pre-service science teachers have participated in this study. The instruments that used in this study are a critical thinking dispositions inventory and critical thinking skills test. The data were collected using questioner and tests. The results showed that: (1) the critical thinking dispositions of pre-service science teachers on the seven indicators (truth-seeking, open-mindedness, analyticity, systematicity, self-confidence, inquisitiveness, and maturity of judgment) are categorized as low; (2) critical thinking skills of pre-service science teachers on the five indicators (interpretation, analysis, evaluation, inference, and explanation) are categorized as low/still underdeveloped; and (3) the meaningful relationship is found, there is a significant correlation (r = 0.735) between pre-service science teachers' critical thinking dispositions and critical thinking skills. An improvement is needed in lecturing the learning model to improve students' critical thinking dispositions and critical thinking skills. Pre-service Science Teachers' Critical Thinking Dispositions and Critical Thinking Skills.