The statue, made by renowned sculptor Ram Sutar, was installed at the parking area of Rajghat Samadhi Complex at a cost of Rs 8.73 lakh, an official release said.
It was mounted on a two-feet-high granite pedestal with 'Be the Change You Wish to See' inscribed on its front side.
The statue was a part of a large number of improvement works being undertaken at Rajghat, the release said.
"The new statue would offer another spot for them to pay their respects to the great soul," the release said.
Naidu also inaugurated an Interpretation Centre in the parking area of the complex.
The Rs 59-lakh facility would enable interactive learning about the life and works of Gandhi through a digital display using LED screens. Visitors can also watch films and listen to speeches of Gandhi, the release stated.
The Samadhi Complex also got a new administrative block that is equipped with a visitors' room, a publication unit and a drinking water facility. This was built at a cost of about Rs 75 lakh," it added