# 2021 US Open – Boys' doubles

Eliot Spizzirri and Tyler Zink were the defending champions, having won the previous edition in 2019, however both players were no longer eligible to participate in junior events. Spizzirri and Zink received a wildcard in the men's doubles event, where they lost in the first round.
Max Westphal and Coleman Wong won the title, defeating Viacheslav Bielinskyi and Petr Nesterov in the final, 6–3, 5–7, [10–1].

## Seeds

All seeds received a bye into the second round.
* Jérôme Kym / Jack Pinnington Jones (withdrew)
* Samir Banerjee / Ozan Colak (second round)
* Sean Cuenin / Sascha Gueymard Wayenburg (quarterfinals)
* Alexander Bernard / Dali Blanch (second round)
* Gonzalo Bueno / Adolfo Daniel Vallejo (second round)
* Victor Lilov / Peter Benjamín Privara (quarterfinals)
* Daniel Rincón / Abedallah Shelbayh (second round)
* Viacheslav Bielinskyi / Petr Nesterov (final)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Max Westphal Coleman Wong | 6 | 4 | [10] | | | | | |
| | Bruno Kuzuhara Mili Poljičak | 4 | 6 | [4] | | | | | |
| | Bruno Kuzuhara Mili Poljičak | 4 | 6 | [4] | | Max Westphal Coleman Wong | 6 | 5 | [10] |
| | | | | | 8 | Viacheslav Bielinskyi Petr Nesterov | 3 | 7 | [1] |
| WC | Nicholas Godsick Ethan Quinn | 6$^2$ | 3 | | 8 | Viacheslav Bielinskyi Petr Nesterov | 3 | 7 | [1] |
| 8 | Viacheslav Bielinskyi Petr Nesterov | 7$^7$ | 6 | | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | Alt | Ryan Colby Aidan Kim | 6 | 5 | [6] | | | | | | | | | |
| | Max Westphal Coleman Wong | 3 | 7$^7$ | [10] | | M Westphal C Wong | 4 | 7 | [10] | | | | | | | | | |
| | Edas Butvilas Alejandro Manzanera Pertusa | 6 | 6$^1$ | [4] | | | | | | | M Westphal C Wong | 4 | 6 | [10] | | | | |
| | Ignacio Buse Álvaro Guillén Meza | 6$^5$ | 3 | | | | | | | WC | J Anthrop B Kittay | 6 | 3 | [7] | | | | |
| WC | Jack Anthrop Benjamin Kittay | 7$^7$ | 6 | | WC | J Anthrop B Kittay | 6 | 7$^7$ | | | | | | | | | | |
| | | | | | 7 | D Rincón A Shelbayh | 4 | 6$^4$ | | | | | | | | | | |
| | | | | | | | | | | | | | | | M Westphal C Wong | 6 | 4 | [10] |
| | | | | | | | | | | | | | | | B Kuzuhara M Poljičak | 4 | 6 | [4] |
| | | | | | 4 | A Bernard D Blanch | 3 | 4 | | | | | | | | | | |
| | Jakub Menšík Philip Sekulic | 6 | 6$^8$ | [5] | | B Kuzuhara M Poljičak | 6 | 6 | | | | | | | | | | |
| | Bruno Kuzuhara Mili Poljičak | 4 | 7$^{10}$ | [10] | | | | | | | B Kuzuhara M Poljičak | 6$^5$ | 7 | [10] | | | | |
| | Sebastian Dominko Christopher Li | 3 | 6$^4$ | | | | | | | 6 | V Lilov PB Privara | 7$^7$ | 5 | [6] | | | | |
| | Miguel Gomes Kyle Kang | 6 | 7$^7$ | | | M Gomes K Kang | 6 | 5 | [6] | | | | | | | | | |
| | | | | | 6 | V Lilov PB Privara | 4 | 7 | [10] | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 5 | G Bueno AD Vallejo | 3 | 3 | | | | | | | | | |
| | Philip Florig Max Hans Rehberg | 2 | 6$^5$ | | WC | N Godsick E Quinn | 6 | 6 | | | | | | | | | |
| WC | Nicholas Godsick Ethan Quinn | 6 | 7$^7$ | | | | | | | WC | N Godsick E Quinn | 6 | 7 | | | | |
| | Kalin Ivanovski Mark Lajal | 3 | 6 | [3] | | | | | | 3 | S Cuenin S Gueymard Wayenburg | 2 | 5 | | | | |
| | Maks Kaśnikowski Aleksander Orlikowski | 6 | 4 | [10] | | M Kaśnikowski A Orlikowski | 6 | 3 | [6] | | | | | | | | |
| | | | | | 3 | S Cuenin S Gueymard Wayenburg | 4 | 6 | [10] | | | | | | | | |
| | | | | | | | | | | | | | | WC | N Godsick E Quinn | 6$^2$ | 3 |
| | | | | | | | | | | | | | | 8 | V Bielinskyi P Nesterov | 7$^7$ | 6 |
| | | | | | 8 | V Bielinskyi P Nesterov | 6 | 7$^7$ | | | | | | | | | |
| | Leo Borg Adam Jurajda | 6 | 3 | [11] | | V Gaubas D Mérida | 3 | 6$^4$ | | | | | | | | | |
| | Vilius Gaubas Daniel Mérida | 3 | 6 | [13] | | | | | | 8 | V Bielinskyi P Nesterov | 6 | 6 | | | | |
| | Matthew William Donald Shang Juncheng | 6 | 0 | [8] | | | | | | | M Dahlberg L Maxted | 3 | 4 | | | | |
| | Måns Dahlberg Lui Maxted | 4 | 6 | [10] | | M Dahlberg L Maxted | 3 | 6 | [10] | | | | | | | | |
| | | | | | 2 | S Banerjee O Colak | 6 | 3 | [7] | | | | | | | | |