The study explored the relationship of relational transparency of school heads and proactive behavior of teachers in public elementary schools of Panabo City Division. Also, it investigated the association of the involved variables and the domains of relational transparency of school heads that significantly influenced proactive behavior of teachers. With the use of probability sampling, 150 secondary teachers in the public schools were selected as the respondents. Utilizing the descriptive-correlational survey method, the data collated were analyzed through the use of Mean, Product-Moment correlation and Regression Analysis. Results revealed that there was an extensive relational transparency of school heads and an extensive proactive behavior of teachers. Furthermore, there was a significant relationship between the two variables. Moreover, all domains of relational transparency of school heads were found to have significantly influenced on proactive behavior of teachers. Based on the findings, it was further suggested that higher officials in the Department of Education may identify means on how to help the school heads in strengthening their relational transparency to strengthen the proactive behavior of teachers. More so, future researchers may further explore the involved variables considering other factors and research methods.