Donald Trump Jr. gives a thumbs-up beside his father after Trump Sr.'s debate with Hillary Clinton on September 26.
The eldest son of Donald Trump has already advertised himself prior to his visit.
Indian Prime Minister Narendora Mondi is also expected to talk at the event.
Government transparency campaign group Citizens for Responsibility and Ethics in Washington (Crew) said in a report released last month that President Trump was profiting from his businesses as a result of being president.
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Trump Jr. will also visit Kolkata, where the construction of a project with 137 luxury units will begin soon.
Nonetheless, the development has already clocked up sales worth almost US$80 million, according to a statement released on Monday.
Mr Trump Jr, the son of the USA president and head of the family business, will be helping to drum up sales of opulent flats in four cities that could net profits of more than $1bn.
The Trump Organization has five projects in India, including an office building development in Gurgaon, making the country the brand's biggest market outside the United States.
But brushed all the speculations and speaking about his tour earlier this month, Trump Jr. said, "India is such an incredible country and our brand has enjoyed tremendous success in the region for many years".
The dinners - and a massive advertising campaign before the trip by one of Trump's Indian business partners - have reignited criticism from ethics experts.
India is Trump Organisation's biggest global market, with four real estate projects underway in Mumbai, Pune, Kolkata, and Gurugram.
"I had no idea that Trump built property around the world before this development was launched", said Hitesh Khanna, who is helping sell units at the Trump towers in Gurgaon through a local real estate brokerage firm.