Thiruvidaimarudur Sambamurti Ganapathigal Balakrishna Sastrigal (1919–2003) was a Hindu scholar and harikatha exponent.
Balakrishna Sastrigal was born in 1919 in the town of Thiruvidaimarudur to Sambamurti Ganapathigal. Sambamurti Ganapathigal was a Vedic scholar who gave discourses.
Balakrishna Sastrigal had his schooling in Madras and graduated from the Madras Christian College. During his days in college, Balakrishna Sastrigal was proficient in English literature and acted in a few Shakespeare plays.
On completion of his studies, Balakrishna Sastrigal joined the Imperial bank of India (now State Bank of India).
Balakrishna Sastrigal's eldest son is Tamil actor, playwright and film director, T. S. B. K. Moulee.