Basketball at the 2020 Summer Olympics – Men's team rosters

This article shows the rosters of all participating teams at the men's basketball tournament at the 2020 Summer Olympics in Tokyo.

Czech Republic
 The roster was announced on 8 July 2021.



France
 The roster was announced on 21 May 2021.



Iran
 The roster was announced on 3 July 2021.



United States
The roster was updated on July 16, 2021.



Australia
The roster was announced on 2 July 2021.



Germany
The roster was announced on 5 July 2021.



Italy
The roster was announced on 6 July 2021.



Nigeria
A 15-player roster was announced on 6 July 2021. The final squad was released on 20 July 2021.



Argentina
<section begin=ARG /> A 15-player roster was announced on 4 June 2021. The final squad was revealed on 18 July 2021.

<section end=ARG />

Japan
<section begin=JPN /> The roster was announced on 5 July 2021.

<section end=JPN />

Slovenia
<section begin=SLO /> The roster was announced on 17 July 2021.

<section end=SLO />

Spain
<section begin=ESP /> A 16-player roster was announced on 6 July 2021. The final squad was revealed on 19 July 2021.

<section end=ESP />