* Ishaan Awasthi: The main character, a dyslexic 8-year-old boy struggling in school. He is portrayed by Darsheel Safary.
* Ram Shankar Nikumbh (Ram): An art teacher who recognizes Ishaan's dyslexia and helps him overcome his learning difficulties. He is portrayed by Aamir Khan.
* Avani Awasthi: Ishaan's mother, who is initially concerned about his academic struggles. She is portrayed by Tisca Chopra.
* Raju Awasthi: Ishaan's father, who is initially strict and disappointed in Ishaan's performance in school. He is portrayed by Vipin Sharma.
* Yograj Sharma: Ishaan's older brother, who is a top student and often compared to Ishaan. He is portrayed by Tanay Chheda.
* Mr. and Mrs. Sen: Ishaan's teachers who struggle to understand him and are frustrated by his lack of progress. They are portrayed by Sachet Engineer and Maya Alagh.
* Principal: The stern head of the school who enforces strict academic standards. He is portrayed by Prakash Raj.
Other Notable Characters:
* Children at School: Ishaan interacts with various classmates, who represent different personalities and approaches to learning.
* Ram's Colleagues: Ram has colleagues who support him in his unconventional teaching methods.
"Taare Zameen Par" is a powerful story that highlights the struggles of a child with dyslexia and the importance of understanding and supporting individual learning styles.