Who is listed as the youngest Australian Open women's singles champion?

Martina Hingis is listed as the youngest Australian Open women’s singles champion. She won the 1997 title at 16 years and three months, defeating Mary Pierce 6–2, 6–2 in the final.

The victory made Hingis the youngest women’s singles champion of the Open Era at any Grand Slam tournament. She also became the first Swiss player to win a major singles title. Hingis did not drop a set during the tournament.

Her record is often confused with the broader record for the youngest Grand Slam champion ever. Lottie Dod won the 1887 Wimbledon women’s singles title at 15, before the Open Era began. Hingis remains the relevant answer for the Australian Open record.

Hingis defended her Australian Open title in 1998 and won again in 1999, becoming the youngest player to complete three consecutive Australian Open women’s singles championships.