It was the most satellites India has put in space at one go, though Russia set the record of 37 for a single launch in 2014.
Indian Prime Minister, Narendra Modi, described the launch as a monumental accomplishment for the state-run Indian Space Research Organisation (ISRO).
Modi is bullish about India's space research programme and has repeatedly praised the efforts of scientists who two years ago pulled off a low-cost mission to send a probe to orbit Mars that succeeded at the first attempt.
The launch of PSLV-C34, carrying 20 satellites in a single payload including the Cartosat-2 series satellite and 19 co-passenger satellites, was like allowing birds to fly in space, ISRO chairman, Kiran Kumar, said.
Polar Satellite Launch Vehicle or PSLV is India's workhorse launch vehicle, and has so far successfully carried 113 satellites, of which 74 were for international customers, ISRO said on its website.
Of the satellites launched on Wednesday, all except three are for international customers, with the United States accounting for more than half.
Editor: Ade P Marboen
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