1991 Australian Open

Boris Becker defeated 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.

Monica Seles defeated 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.

Scott Davis / David Pate defeated Patrick McEnroe / 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.

Patty Fendick / Mary Joe Fernández defeated Gigi Fernández / 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.

Jo Durie / Jeremy Bates defeated Robin White / 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.

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

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

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

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