Sri Lanka, Aug. 10 -- As of 2025, Mukesh Ambani, chairman and managing director of Reliance Industries, remains the wealthiest individual in India and South Asia with an estimated net worth of $118 billion - and among those making the region's billionaire ranks is Sri Lankan business magnate Ishara Nanayakkara, now valued at $1.6 billion. His vast business empire spans telecom, energy, petrochemicals, and retail, placing him in a league of his own among the region's richest. While Ambani's fortune overshadows his regional counterparts, several other South Asian nations boast billionaires making significant economic waves - including Sri Lanka. Sri Lanka: Ishara Nanayakkara - $1.6 Billion In Sri Lanka, Ishara Nanayakkara has emerge...