Prime Minister Narendra Modi, who met President Trump at the White House, thanked him for the support.
"President Trump reaffirmed the support of the United States for India's permanent membership on a reformed UN Security Council," said a joint India-US statement after the meeting between PM Modi and President Trump.
"As global non-proliferation partners, the United States expressed strong support for India's early membership in the Nuclear Suppliers Group, the Wassenaar Arrangement, and the Australia Group," the joint statement said.
India has been making diplomatic efforts to ensure expansion of the permanent as well as non-permanent membership of the UNSC.
China objects to India's membership bid in the NSG - a 48-member elite group which controls the nuclear trade - and says there is no change in its stance on the admission of non-NPT states into the grouping. India is not a signatory to the NPT.
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