2021 Australian Open – Men's doubles

Ivan Dodig and Filip Polášek defeated the defending champions Rajeev Ram and Joe Salisbury in the final, 6–3, 6–4 to win the men's doubles tennis title at the 2021 Australian Open. With the win, Dodig and Polášek claimed their first Grand Slam title as a team. The victory earned Polášek his first major title, and made him the second Slovak to win one after Daniela Hantuchová.

Mate Pavić was in contention to reclaim the ATP No. 1 doubles ranking, but he failed to do so after he and Nikola Mektić lost in the semifinals to Dodig and Polášek.

Seeds
• 🇨🇴 Juan Sebastián Cabal / 🇨🇴 Robert Farah (second round)

• Nikola Mektić /  Mate Pavić (semifinals)

• 🇪🇸 Marcel Granollers / 🇦🇷 Horacio Zeballos (first round)

•  Wesley Koolhof / 🇵🇱 Łukasz Kubot (third round)

• 🇺🇸 Rajeev Ram / 🇬🇧 Joe Salisbury (final)

• 🇬🇧 Jamie Murray / 🇧🇷 Bruno Soares (semifinals)

• 🇧🇷 Marcelo Melo / 🇷🇴 Horia Tecău (third round)

• 🇫🇷 Pierre-Hugues Herbert / 🇫🇷 Nicolas Mahut (quarterfinals)

•  Ivan Dodig / 🇸🇰 Filip Polášek (champions)

• 🇦🇺 John Peers / 🇳🇿 Michael Venus (third round)

• 🇫🇮 Henri Kontinen / 🇫🇷 Édouard Roger-Vasselin (first round)

• 🇫🇷 Jérémy Chardy / 🇫🇷 Fabrice Martin (first round)

•  Robin Haase / 🇦🇹 Oliver Marach (first round)

• 🇧🇪 Sander Gillé / 🇧🇪 Joran Vliegen (first round)

• 🇦🇺 Max Purcell / 🇦🇺 Luke Saville (second round)

• 🇬🇧 Ken Skupski / 🇬🇧 Neal Skupski (second round)

Wild cards
• 🇦🇺 Alex Bolt / 🇦🇺 Jordan Thompson

• 🇦🇺 James Duckworth / 🇦🇺 Marc Polmans

• 🇦🇺 Matthew Ebden / 🇦🇺 John-Patrick Smith

• 🇦🇺 Andrew Harris / 🇦🇺 Alexei Popyrin

• 🇦🇺 Thanasi Kokkinakis / 🇦🇺 Nick Kyrgios

• 🇰🇷 Nam Ji-sung / 🇰🇷 Song Min-kyu

• Stefanos Tsitsipas /  Petros Tsitsipas

Protected ranking
• 🇪🇸 Pablo Carreño Busta / 🇪🇸 Marc López

• 🇺🇸 Mackenzie McDonald / 🇺🇸 Tommy Paul

Alternate pairs
• 🇮🇹 Salvatore Caruso / 🇫🇮 Emil Ruusuvuori

• Lloyd Harris / 🇦🇹 Julian Knowle

• 🇮🇹 Gianluca Mager / 🇯🇵 Yoshihito Nishioka

• 🇸🇰 Andrej Martin / 🇦🇹 Tristan-Samuel Weissborn

Withdrawals
• 🇭🇺 Attila Balázs / 🇭🇺 Márton Fucsovics

• 🇮🇳 Rohan Bopanna / João Sousa

• 🇦🇺 Alex Bolt / 🇦🇺 Jordan Thompson

• 🇮🇹 Salvatore Caruso / 🇪🇸 Alejandro Davidovich Fokina

• 🇺🇸 Steve Johnson / 🇺🇸 Sam Querrey

•  Raven Klaasen / 🇯🇵 Ben McLachlan

• 🇩🇪 Kevin Krawietz / 🇩🇪 Andreas Mies