1. Father of Astronomy:
Name: Aryabhatta
Work: Aryabhattiyam
2. Father of Astrology:
Name: Varahamihira
Works: Panchasiddhantika
3. Father of Surgery:
Name: Sushruta
Works: Samhitas
4. Father of Anatomy:
Name: Patanjali
Work: Yogasutra
5. Father of Yoga:
Name: Patanjali
Work: Yogasutra
6. Father of Economics:
Name: Acharya Chanakya
Work: Arthashastra
7. Father of Atomic Theory:
Name: Rishi Kanada
Work: Kanada Sutras
8. Father of Architecture:
Name: Vishwakarma
9. Father of Aerodynamics:
Name: Mayasura
Work: Vastu Darpana
10. Father of Medicine:
Name: Dhanvantari
Contribution: First propounded Ayurveda
11. Father of Grammar:
Name: Panini
Work: Vyakarana Deepika
12. Father of Natyashastra:
Name: Bharatamuni
Work: Natyashastra
13. Father of Kavya (Literature):
Name: Krishna Dwaipayana (VedaVyasa)
Works: Mahabharata, Ashtaadasha Puranas
14. Father of Playwriting:
Name: Kalidasa
Works: Meghadhootam, Raghuvamsham, Kumara Sambhava, etc.
15. Father of Ganita (Mathematics):
Name: Bhaskara II
Works: Lilavati
16. Father of Guerrilla Warfare:
Name: Bhagwan Shri Chhatrapati Shivaji Maharaj
Noted Work: Shri Shiv Bharat by Kavindra Parmanand
Hindi Translation: Sanjay Dixit & Tufail Chaturvedi
17. Father of Story Writing:
Name: Vishnu Sharma
Works: Panchatantra
18. Father of Politics:
Name: Acharya Chanakya
Works: Arthashastra, Nitishastra
19. Father of Kama Shastra:
Name: Vatsyayana
Work: Kamasutra
20. Father of Philosophy:
Name: Bhagwan Sri Krishna
Work: Shri Bhagavad Geeta
21. Father of Advaitha:
Name: Shankara
Works: Commentaries (Bhashyas), Panchadasi, Vivekachudamani
22. Father of Alchemy:
Name: Nagarjuna
Work: Pragnaparamita Sutras
23. Father/Founder of Hindavi Swarajya/Hindu Empire/Maratha Empire:
Name: Bhagwan Shri Chhatrapati Shivaji Maharaj
Contributions: Also known as the Father of the Modern Bhartiya Navy and for Ghar Wapasi
24. Father of Electricity:
Name: Maharshi Agastya
Work: Agastya Samhita
25. Baudhayan:
Contribution: The original mathematician behind the "Pythagorean theorem". Baudhayan (c. 800 BCE), a Bharatiya mathematician, was the first to arrive at several concepts in Mathematics, which were later rediscovered by the Western world. The theorem known today as "Pythagorean theorem" is found in Baudhayan's Sutras, written years before the era of Pythagoras.
The above list is just the tip of an iceberg.
Let us take pride in sharing and educating the world about what our ancestors did.
Yet our ancestors bowed down to the world with their humble "Namaskar".