Shalabh "Shalli" Kumar, who is founder and president of Republican Hindu Coalition (RHC), has been appointed to the Transition Finance and Inauguration teams.
"I am honoured to accept these positions with the transition team and the inauguration committee," Kumar said in a statement.
"I am looking forward to rolling up my sleeves and working together with Steve and the other members of the Trump administration to Make America Great Again," he said.
Kumar along with Steven Mnuchin, Trump's pick for Treasury Secretary, also played a key role in organising the "Aab Ki baar Trump Sarkar" ad campaign.
Kumar collaborated on Humanity United Against Terror event in New Jersey on October 15, and on other events during the campaign, including a meet and greet between Donald Trump and Hindu leaders in Orlando just days before the election, as well as a visit by Trump's son-in-law to a Hindu Temple.
He also donated a whopping $898,000 (approximately Rs 6 crores) towards Trump's victory campaign.
Trump, who is forming his Cabinet has picked two Indian- American women, Nikki Haley as US envoy to the United Nations and Dr Seema Verma as Administrator of the Centers for Medicare and Medicaid Services.