| 2021 Great Ocean Road Open | |
|---|---|
| Date | 1–7 February | 
| Category | ATP Tour 250 | 
| Draw | 56S / 24D | 
| Prize money | $382,575 (2021) | 
| Surface | Hard | 
| Location | Melbourne, Australia | 
| Venue | Melbourne Park | 
| Champions | |
| Singles | |
| Doubles | |
The 2021 Great Ocean Road Open was a tournament on the 2021 ATP Tour, one of six events in the 2021 Melbourne Summer Series. It was played on outdoor hard courts in Melbourne, Australia. It was organised as a lead-up tournament to the 2021 Australian Open, and was held at the same venue, due to other tournaments in Australia being cancelled as a result of the COVID-19 pandemic. This tournament took place simultaneously with the 2021 Murray River Open and the 2021 ATP Cup, and was considered a relocation of the men's 2021 Adelaide International.[1]
Points and prize money
Point distribution
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 64 | 
| Singles | 250 | 150 | 90 | 45 | 20 | 10 | 0 | 
|---|---|---|---|---|---|---|---|
| Doubles | 0 | — | 
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 64 | 
| Singles | $19,500 | $13,255 | $10,000 | $7,400 | $5,500 | $4,000 | $2,500 | 
| Doubles* | $7,200 | $5,760 | $4,560 | $3,360 | $2,160 | $1,200 | — | 
*per team
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed | 
|---|---|---|---|
| David Goffin | 14 | 1 | |
| Karen Khachanov | 20 | 2 | |
| Hubert Hurkacz | 29 | 3 | |
| Jannik Sinner | 36 | 4 | |
| Nikoloz Basilashvili | 39 | 5 | |
| Reilly Opelka | 40 | 6 | |
| Miomir Kecmanović | 42 | 7 | |
| Alexander Bublik | 45 | 8 | |
| Tennys Sandgren | 50 | 9 | |
| Sam Querrey | 51 | 10 | |
| Jordan Thompson | 52 | 11 | |
| Laslo Đere | 56 | 12 | |
| Aljaž Bedene | 58 | 13 | |
| Pablo Andújar | 59 | 14 | |
| Feliciano López | 63 | 16 | 
- 1 Rankings are as of January 25, 2021
 
Other entrants
The following players received wildcards into the main draw:
The following players have been accepted directly into the main draw using a protected or a special ranking:
The following players received entry as an alternate:
Withdrawals
- Before the tournament
 
 Damir Džumhur → replaced by 
 Matthew Ebden
 Kyle Edmund → replaced by 
 Gianluca Mager
 Cristian Garín → replaced by 
 Yasutaka Uchiyama
 John Isner → replaced by 
 Andreas Seppi
 Ilya Ivashka → replaced by 
 Nam Ji-sung
 Steve Johnson → replaced by 
 Kamil Majchrzak
 Vasek Pospisil → replaced by 
 Thomas Fancutt
Retirements
Doubles main-draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed | 
|---|---|---|---|---|---|
| Juan Sebastián Cabal | Robert Farah | 3 | 1 | ||
| Jamie Murray | Bruno Soares | 30 | 2 | ||
| Ivan Dodig | Filip Polášek | 33 | 3 | ||
| Pierre-Hugues Herbert | Henri Kontinen | 56 | 4 | ||
| Marcus Daniell | Michael Venus | 58 | 5 | ||
| Marcelo Arévalo | Matwé Middelkoop | 97 | 6 | ||
| Luke Bambridge | Dominic Inglot | 122 | 7 | ||
| Alexander Bublik | Andrey Golubev | 178 | 8 | 
- Rankings are as of January 25, 2021.
 
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pairs received entry as alternates into the doubles main draw:
Withdrawals
- Before the tournament
 
 Robin Haase / 
 Oliver Marach → replaced by 
 Scott Puodziunas / 
 Calum Puttergill
 Steve Johnson / 
 Sam Querrey → replaced by 
 Roberto Carballés Baena / 
 Pablo Cuevas
 Reilly Opelka / 
 Vasek Pospisil → replaced by 
 Tristan Schoolkate / 
 Dane Sweeny
- During the tournament
 
Retirements
Champions
Singles
 Jannik Sinner def. 
 Stefano Travaglia, 7–6(7–4), 6–4
Doubles
 Jamie Murray / 
 Bruno Soares def. 
 Juan Sebastián Cabal / 
 Robert Farah, 6–3, 7–6(9–7)