Sundaram Natarajan is an Indian ophthalmologist. In 2002, he started a free clinic in Dharavi, a slum in Mumbai, and treated more than 8,000 people. He has also held free camps in various other suburbs of Mumbai such as Mankhurd and Govandi to treat the economically poor. In 2016, he also held a camp in Kashmir to operate and cure the victims of pellet gun firings.
In 2013, he was awarded with Padma Shri, India's fourth highest civilian honour. , he is head of the Aditya Jyot Eye Hospital in Wadala, Mumbai.
Natarajan graduated from the Madras Medical College in 1980. He completed his Diploma in Ophthalmology (D.O) at the University of Madras in 1984 and Fellowship in Retina and Vitreous Surgery (F.R.V.S) at Sankara Nethralaya in 1985.
He completed Fellow of All India Collegium of Ophthalmology (FAICO) in 2012, Fellowship of the Royal Colleges of Surgeons (FRCS) in Glasgow in 2018, and Fellow of European Latino American Society of Ophthalmology (FELAS) in 2019.
He was awarded Padma Shri, one of India's highest civilian awards, by President of India Shri Pranab Mukherjee in 2013.
He holds a former Guinness World Record for the most diabetic eye screenings in 8 hours. This record was achieved when 649 diabetes patients were screened in Dharavi, Mumbai.
He is a "Character Inductee" of the Retina Hall of Fame, being one of two Indians listed in 2017.
He was awarded a State Award for Meritorious Service by the Government of Jammu and Kashmir for creating a record by performing forty-seven vitreoretinal surgeries in two and a half days while in Jammu and Kashmir.
He holds a National Record in the Limca Book of Records for performing the first completely sutureless sclera bucking as well as a sutureless 23G vitrectomy.