The 81-strong Indian contingent, the biggest ever, was led by wrestler Sushil Kumar, a bronze medallist in the 2008 Beijing Games.
It was a smartly dressed Indian contingent. The men wore yellow safas, navy blue blazers, cream-coloured trousers, off-white shirts and ties, and the women were dressed in elegant sarees.
Indian Olympic Association (IOA) secretary-general Randhir Singh waved at the contingent from the VIP box.
Indians will take part in 13 disciplines. Four years ago, India won three medals, gold for shooter Abhinav Bindra and bronze medals for Sushil and boxer Vijender Singh.
Image: India's flagbearer Sushil Kumar leads his delegation as they parade in the opening ceremony of the London 2012 Olympic Games in the Olympic Stadium in London on July 27, 2012.