Pranavi Urs began the final round three shots clear of the field.
A triple bogey on the par-four third hole erased the lead.
She birdied the sixth and signed for an even-par 70.
She won at 15-under 265, one stroke ahead of Singapore’s Shannon Xuan Yin Tan and China’s Yin Ruoning.
It is India’s first Asian Games golf gold in 24 years.
India also won silver in the women’s team event, with Urs, Aditi Ashok and Diksha Dagar finishing second behind China.
The course is a par 70, so four rounds add up to a par of 280, which makes a total of 265 equal to 15 under par.
The Asian Games golf competition has individual and team events, played over four rounds.
Aditi Ashok finished fourth in women’s golf at the Tokyo 2020 Olympics, one of the best Olympic results by an Indian golfer.
The Asian Games 2026 are being held in Aichi-Nagoya, Japan, from September 19 to October 4.
A triple bogey is a score of three shots over par on a single hole, and a birdie is a score of one shot under par.
Golf has been part of the Asian Games programme since the 1982 Games in New Delhi.
October 3 was Day 14 of the Asian Games 2026.
India’s golf medals at the Games now include the individual gold and the women’s team silver.
Urs’s final-round 70 was even par for the course, and her first three rounds had built the three-shot lead she took into the last day.
Pranavi Urs, 23, won the women’s individual golf gold at the Asian Games 2026 in Aichi-Nagoya on Saturday, October 3.
She finished the four-round competition at 15-under 265 at the Kasugai Country Club East Course.
She won by one stroke over Singapore’s Shannon Xuan Yin Tan and China’s Yin Ruoning, who shared second place at 14-under 266.
Golf putting green (representative image), Wikimedia Commons, public domain