# 2021 French Open – Boys' singles

Luca Van Assche won the title, defeating Arthur Fils in an all-French final, 6–4, 6–2. This was the first Grand Slam junior tournament with all-French semifinalists.
Dominic Stricker was the defending champion, but was no longer eligible to participate in junior events.

## Seeds

    01. Shang Juncheng (quarterfinals)
    02. Bruno Kuzuhara (third round)
    03. Pedro Boscardin Dias (third round)
    04. Jack Pinnington Jones (first round)
    05. Giovanni Mpetshi Perricard (semifinals)
    06. Jérôme Kym (second round)
    07. Dali Blanch (second round)
    08. Daniel Rincón (quarterfinals)
    09. Sean Cuenin (semifinals)
    10. Alexander Bernard (first round)
    11. Pierre Yves Bailly (second round)
    12. Mark Lajal (first round)
    13. Luca Van Assche (champion)
    14. Arthur Fils (final)
    15. Samir Banerjee (first round)
    16. Viacheslav Bielinskyi (quarterfinals)
Click on the seed number of a player to go to their draw section.

## 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Shang Juncheng | 4 | 5 | | | | | | | | | |
| 9 | Sean Cuenin | 6 | 7 | | | | | | | | | |
| 9 | Sean Cuenin | 6 | 7 | 9 | Sean Cuenin | 5 | 4 | | | | | |
| | | | | 13 | Luca Van Assche | 7 | 6 | | | | | |
| 13 | Luca Van Assche | 7$^{10}$ | 6 | 13 | Luca Van Assche | 7 | 6 | | | | | |
| | Daniel Mérida | 6$^8$ | 4 | | | | | | | | | |
| | Daniel Mérida | 6$^8$ | 4 | | | | | | 13 | Luca Van Assche | 6 | 6 |
| | | | | | | | | | 14 | Arthur Fils | 4 | 2 |
| 5 | Giovanni Mpetshi Perricard | 6 | 6 | | | | | | | | | | 14 | Arthur Fils | 4 | 2 |
| 16 | Viacheslav Bielinskyi | 2 | 1 | | | | | | | | | |
| 16 | Viacheslav Bielinskyi | 2 | 1 | 5 | Giovanni Mpetshi Perricard | 6 | 3 | 6$^5$ | | | | |
| | | | | 14 | Arthur Fils | 3 | 6 | 7$^7$ | | | | |
| 8 | Daniel Rincón | 2 | 3 | 14 | Arthur Fils | 3 | 6 | 7$^7$ | | | | |
| 14 | Arthur Fils | 6 | 6 | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 1 | Shang Juncheng | 6 | 5 | 7 | | | | | | | | | | | | | | |
| | Philip Sekulic | 4 | 7 | 5 | 1 | J Shang | 4 | 6 | 6 | | | | | | | | | |
| WC | Arthur Géa | 2 | 6 | 6 | WC | A Géa | 6 | 3 | 2 | | | | | | | | | |
| | Elmer Møller | 6 | 2 | 1 | | | | | | 1 | J Shang | 7$^7$ | 3 | 7$^7$ | | | | |
| | Max Westphal | 6 | 3 | 4 | | | | | | | L Borg | 6$^5$ | 6 | 6$^4$ | | | | |
| | Leo Borg | 3 | 6 | 6 | | L Borg | 1 | 7$^7$ | 6 | | | | | | | | | |
| | Max Hans Rehberg | 6 | 7 | | | MH Rehberg | 6 | 6$^5$ | 3 | | | | | | | | | |
| 15 | Samir Banerjee | 4 | 5 | | | | | | | | | | | | 1 | J Shang | 4 | 5 |
| 9 | S Cuenin | 6 | 6 | | | | | | | | | | | | 9 | S Cuenin | 6 | 7 |
| | Lui Maxted | 4 | 3 | | 9 | S Cuenin | 7$^7$ | 6 | | | | | | | | | | |
| | Ozan Colak | 7$^7$ | 1 | 3 | | G Samofalov | 6$^2$ | 1 | | | | | | | | | | |
| | German Samofalov | 6$^5$ | 6 | 6 | | | | | | 9 | S Cuenin | 7$^7$ | 6 | | | | | |
| | Marko Andrejic | 3 | 0 | | | | | | | WC | G Debru | 6$^4$ | 4 | | | | | |
| WC | Gabriel Debru | 6 | 6 | | WC | G Debru | 6 | 7 | | | | | | | | | | |
| | Abedallah Shelbayh | 4 | 1 | | 6 | J Kym | 2 | 5 | | | | | | | | | | |
| 6 | Jérôme Kym | 6 | 6 | | | | | | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 3 | Pedro Boscardin Dias | 6 | 6 | | | | | | | | | | | | | | | |
| WC | Joshua Dous Karpenschif | 3 | 3 | | 3 | P Boscardin Dias | 6$^7$ | 6 | 6 | | | | | | | | | |
| | Aleksander Orlikowski | 5 | 3 | | | H Međedović | 7$^9$ | 3 | 4 | | | | | | | | | |
| | Hamad Međedović | 7 | 6 | | | | | | | 3 | P Boscardin Dias | 2 | 4 | | | | | |
| | Aidan Mayo | 6$^0$ | 6 | 6 | | | | | | 13 | L Van Assche | 6 | 6 | | | | | |
| | Matthew William Donald | 7$^7$ | 4 | 2 | | A Mayo | 2 | 3 | | | | | | | | | | |
| | Petr Nesterov | 2 | 3 | | 13 | L Van Assche | 6 | 6 | | | | | | | | | | |
| 13 | Luca Van Assche | 6 | 6 | | | | | | | | | | | | 13 | L Van Assche | 7$^{10}$ | 6 |
| 11 | Pierre Yves Bailly | 6 | 6 | | | | | | | | | | | | | D Mérida | 6$^8$ | 4 |
| | Jack Anthrop | 1 | 3 | | 11 | PY Bailly | 6 | 2 | 4 | | | | | | | | | |
| | Sascha Gueymard Wayenburg | 3 | 6 | 7 | | S Gueymard Wayenburg | 2 | 6 | 6 | | | | | | | | | |
| | Igor Kudriashov | 6 | 3 | 5 | | | | | | | S Gueymard Wayenburg | 6 | 2 | 3 | | | | |
| | Gonzalo Bueno | 2 | 2 | | | | | | | | D Mérida | 3 | 6 | 6 | | | | |
| | Daniel Mérida | 6 | 6 | | | D Mérida | 6 | 6 | | | | | | | | | | |
| | Mehdi Sadaoui | 6$^1$ | 3 | | 7 | D Blanch | 3 | 4 | | | | | | | | | | |
| 7 | Dali Blanch | 7$^7$ | 6 | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 5 | Giovanni Mpetshi Perricard | 6 | 6 | | | | | | | | | | | | | | | |
| | Måns Dahlberg | 3 | 4 | | 5 | G Mpetshi Perricard | 6 | 1 | 7 | | | | | | | | | |
| | Marko Topo | 6 | 7$^9$ | | | M Topo | 4 | 6 | 5 | | | | | | | | | |
| | Johan Alexander Rodríguez Rodríguez | 1 | 6$^7$ | | | | | | | 5 | G Mpetshi Perricard | 6 | 6 | | | | | |
| | Peter Benjamín Privara | 6 | 6 | | | | | | | | PB Privara | 2 | 0 | | | | | |
| | Martin Katz | 0 | 2 | | | PB Privara | 7$^{12}$ | 6 | | | | | | | | | | |
| WC | Charlélie Cosnet | 7$^7$ | 7 | | WC | C Cosnet | 6$^{10}$ | 3 | | | | | | | | | | |
| 10 | Alexander Bernard | 6$^5$ | 5 | | | | | | | | | | | | 5 | G Mpetshi Perricard | 6 | 6 |
| 16 | Viacheslav Bielinskyi | 3 | 6 | 6 | | | | | | | | | | | 16 | V Bielinskyi | 2 | 1 |
| | Ethan Quinn | 6 | 3 | 3 | 16 | V Bielinskyi | 6 | 6 | | | | | | | | | | |
| WC | Thibault Verdier | 2 | 6 | 6 | WC | T Verdier | 2 | 3 | | | | | | | | | | |
| | Mika Lipp | 6 | 2 | 3 | | | | | | 16 | V Bielinskyi | 2 | 6 | 6 | | | | |
| | Coleman Wong | 6 | 6 | | | | | | | | M Kaśnikowski | 6 | 3 | 1 | | | | |
| WC | Théo Papamalamis | 2 | 1 | | | C Wong | 3 | 6 | 3 | | | | | | | | | |
| | Maks Kaśnikowski | 6 | 6 | | | M Kaśnikowski | 6 | 3 | 6 | | | | | | | | | |
| 4 | Jack Pinnington Jones | 3 | 4 | | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 8 | Daniel Rincón | 6 | 6 | | | | | | | | | | | | | |
| | Adolfo Daniel Vallejo | 3 | 3 | | 8 | D Rincón | 6 | 6 | | | | | | | | |
| | Miguel Gomes | 3 | 6 | 6$^5$ | WC | R Bertrand | 2 | 3 | | | | | | | | |
| WC | Robin Bertrand | 6 | 3 | 7$^7$ | | | | | 8 | D Rincón | 6 | 6 | | | | |
| | Victor Lilov | 6 | 6 | | | | | | | V Lilov | 3 | 3 | | | | |
| WC | Antoine Ghibaudo | 2 | 2 | | | V Lilov | 6 | 2 | | | | | | | | |
| | Luca Nardi | 7 | 4 | 6 | | L Nardi | 2 | 2$^r$ | | | | | | | | |
| 12 | Mark Lajal | 5 | 6 | 0 | | | | | | | | | 8 | D Rincón | 2 | 3 |
| 14 | Arthur Fils | 6 | 6 | | | | | | | | | | 14 | A Fils | 6 | 6 |
| | Kokoro Isomura | 4 | 3 | | 14 | A Fils | 6 | 6 | | | | | | | | |
| | João Victor Couto Loureiro | 7$^7$ | 3 | 6 | | JV Couto Loureiro | 3 | 4 | | | | | | | | |
| | Álvaro Guillén Meza | 6$^1$ | 6 | 2 | | | | | 14 | A Fils | 6 | 7$^7$ | | | | |
| | Konstantin Zhzhenov | 4 | 7$^9$ | 6$^3$ | | | | | 2 | B Kuzuhara | 4 | 6$^2$ | | | | |
| | Mili Poljičak | 6 | 6$^7$ | 7$^7$ | | M Poljičak | 4 | 3 | | | | | | | | |
| | Adam Jurajda | 6$^2$ | 0 | | 2 | B Kuzuhara | 6 | 6 | | | | | | | | |
| 2 | Bruno Kuzuhara | 7$^7$ | 6 | | | | | | | | | | | | | |