The relationship between the school administrators' perceived personal traits and teachers' resistance to change, and whether the personality traits of the administrators predict teachers' resistance to change in the 2021-2022 academic year, needs to be investigated. The sample for this study is composed of 501 teachers working in the central districts of Mersin province. The "Five-Factor Personality Scale" was used to determine the perceived personality traits of school administrators, and the "Resistance to Change Scale" was used to determine the resistance of teachers to change. The data was gathered over 15 days. Correlation and multiple regression analysis were used to analyze the data. The results showed a negative relationship between the decisiveness sub-dimension of the personality traits scale and the cognitive and behavioral dimensions of the resistance to change scale. Additionally, a weak negative relationship was found between the self-discipline and compliance sub-dimensions of the personality traits scale and the cognitive, emotional, and behavioral dimensions of the decisiveness scale. The extraversion sub-dimension of personality traits showed a negative relationship with the emotional and behavioral sub-dimensions of resistance to change. However, a positive relationship was observed between the neuroticism sub-dimension of the personality traits scale and all dimensions of resistance to change. The personality traits of school administrators significantly predict the level of teachers' resistance to change.