Purpose: This study was conducted to investigate the concept of online trolling among Iranian football fans (Esteghlal and Persepolis) on Instagram. Using the thematic analysis method and purposeful sampling method. we sought to examine two fan pages (PersepolisFC. fans and fctaj) belonging to these two. https://jhtstrt7nvvz.nizarblog.com/35080250/implementation-of-data-mining-prediction-delivery-time-using-linear-regression-algorithm