Park has endorsement deals with KB Financial Group, Srixon, Panasonic, Lynx, Jeju Samdasoo & Mercedes-Benz.

While an amateur from 2004 through 2006, Park played in the Kraft Nabisco Championship as a sponsor invite and in the LPGA Takefuji Classic three times, recording two top-10 finishes.

The LPGA denied Park's request, so she enrolled at the University of Nevada, Las Vegas but soon after dropped out and turned professional, playing on the Duramed Futures Tour where the age of entry had been lowered to 17 in late January.

She finished third on its season-ending money list to earn exempt status on the LPGA Tour for the 2007 season.

At 19, she was the youngest player to win the title, and finished four strokes ahead of runner-up Helen Alfredsson.

After her breakout year in 2008, Park struggled in 2009, recording only four top-10 finishes and ending the season 50th on the LPGA official money list.

With no top-five finishes on the LPGA Tour, she sunk to 31st on the official money list and 27th in scoring average.

In April, Park won her second major title with a four-stroke victory at the Kraft Nabisco Championship over compatriot Ryu So-Yeon.

After a 36-hole final day of regulation play, Park defeated Catriona Matthew on the third sudden-death playoff hole to clinch the victory.

Park became the seventh player in LPGA Tour history to win the year's opening two major championships.

[9] Two weeks later, Park won her fifth title of the season at the Walmart NW Arkansas Championship when she defeated compatriot Ryu So-Yeon in a sudden-death playoff.

They won by twenty-eight strokes combined over the Chinese duo of Shanshan Feng and Xi Yu Lin.

She shot a bogey-free six-under 65 in the final round to defeat Cristie Kerr of the United States and Park Hee-Young of South Korea by three strokes.

Park won her 16th title on the LPGA Tour at the Women's British Open, three strokes ahead of runner-up Ko Jin-young.

Many debated whether or not Park's 4 majors should be counted as a Career Grand Slam, but despite the discussions, the LPGA Tour officially stated that Inbee would be credited with accomplishing the rare feat.

[14][15] In August, Park became the first woman in 116 years to win an Olympic gold medal in golf, defeating world number 1 Lydia Ko by five strokes.

In March, Park won the HSBC Women's Champions, and in the process scored a course record of 64 in the final round.

[17] In April 2018, Park finished as a runner-up at the ANA Inspiration, after losing in a sudden-death playoff to Pernilla Lindberg.

Park regained the World number 1 spot from Shanshan Feng after she finished tied for 2nd at the Hugel-JTBC LA Open in late April.

In February 2020, Park won the ISPS Handa Women's Australian Open by 3 strokes over Amy Olson.

In March 2021, Park won the Kia Classic in Carlsbad, California on the LPGA Tour for her 21st career victory.