| Dates | July 18, 2020 – May 2, 2021 |
|---|---|
← 2020 2022 → | |
The 2021 Lamar Hunt U.S. Open Cup tournament proper was to feature teams from all five tiers of the men's American soccer pyramid.
Qualification for the 2021 tournament was drastically altered due to the ongoing COVID-19 pandemic. The tournament itself was downsized to 16 teams, before ultimately being canceled for the second consecutive season due to the pandemic.