Regret Iyer alias Satyanarayana Iyer (born 28 September 1950)[1] is a writer, photographer, publisher and regret slip collector, residing in Bangalore, India.
[2] He was instrumental in finding the largest Banyan Tree in India, the Thimmamma Marrimanu and record the fact in Guinness World Records 1989.
He became so famous as regret slip collector that his real name of Satyanarayana is overshadowed by his acquired name, Regret Iyer.
[4] He also established Regret Iyer Publications and Productions, to encourage younger talents.
[4] Regret Iyer is awarded with T.S.Satyan Memorial Lifetime Achievement award for Best Freelance Photography on 19 December 2011.