1991 Australian Open

Seniors

Men's singles

Main article: 1991 Australian Open – Men's singles

GER Boris Becker defeated CSK Ivan Lendl 1–6, 6–4, 6–4, 6–4

• It was Becker's 5th career Grand Slam title and his 1st Australian Open title. He became the first male German player to win an Australian Open singles title.

Women's singles

Main article: 1991 Australian Open – Women's singles

YUG Monica Seles defeated CSK Jana Novotná 5–7, 6–3, 6–1

• It was Seles's 2nd career Grand Slam title and her 1st Australian Open title. She became the only Yugoslav player – male or female – to win a Grand Slam singles title.

Men's doubles

Main article: 1991 Australian Open – Men's doubles

USA Scott Davis / USA David Pate defeated USA Patrick McEnroe / USA David Wheaton 6–7(4–7), 7–6(10–8), 6–3, 7–5

• It was Davis' only career Grand Slam title. It was Pate's only career Grand Slam title.

Women's doubles

Main article: 1991 Australian Open – Women's doubles

USA Patty Fendick / USA Mary Joe Fernández defeated USA Gigi Fernández / CSK Jana Novotná 7–6(7–4), 6–1

• It was Fendick's only career Grand Slam title. It was Fernandez's 1st career Grand Slam title and her only Australian Open title.

Mixed doubles

Main article: 1991 Australian Open – Mixed doubles

GBR Jo Durie / GBR Jeremy Bates defeated USA Robin White / USA Scott Davis 2–6, 6–4, 6–4

• It was Durie's 2nd and last career Grand Slam title and her only Australian Open title. It was Bates' 2nd and last career Grand Slam title and his only Australian Open title.

Juniors

Boys' singles

SWE Thomas Enqvist defeated AUS Stephen Gleeson 7–6, 6–7, 6–1

Girls' singles

AUS Nicole Pratt defeated AUS Kristin Godridge 6–4, 6–3

Boys' doubles

AUS Grant Doyle / AUS Joshua Eagle defeated AUS Jamie Holmes / AUS Paul Kilderry 7–6, 6–4

Girls' doubles

CSK Karina Habšudová / GER Barbara Rittner defeated AUS Joanne Limmer / AUS Angie Woolcock 6–2, 6–0