| Club: | LA Galaxy II |
| Season: | 2021 |
| Mgrtitle: | Head coach |
| Manager: | Junior Gonzalez |
| Stadium: | Dignity Health Sports Park |
| League: | USL Championship |
| League Result: | Pacific Division: 6th |
| League Topscorer: | Preston Judd (17 goals) |
| Largest Win: | LA 5–0 LV (5/5) LA 5–0 ELP (10/17) |
| Largest Loss: | PHX 5–0 LA (7/17) |
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| Prevseason: | 2020 |
| Nextseason: | 2022 |
The 2021 LA Galaxy II season was the club's 8th season of existence, and their 8th season in the USL Championship, the second tier of the United States Soccer Pyramid.
| Pos. | Player | Transferred from | Fee/notes | Date | Source | |
|---|---|---|---|---|---|---|
| MF | Taylor Davila | California Golden Bears | Sign. Played for the LA Galaxy Academy in 2018. | February 11, 2021 | [1] | |
| MF | Alex Alcala | LA Galaxy Academy | Sign. | February 16, 2021 | [2] | |
| MF | Victor Valdez | LA Galaxy Academy | Sign. | March 3, 2021 | [3] | |
| MF | Axel Picazo | Philadelphia Union II | Sign. | March 4, 2021 | [4] | |
| MF | Miguel Ávalos | Pachuca Academy | Sign. | March 25, 2021 | [5] | |
| MF | Adrian Gonzalez | LA Galaxy Academy | Sign. | April 1, 2021 | [6] | |
| MF | Daniel Aguirre | UC Riverside Highlanders | Sign. | April 7, 2021 | [7] | |
| FW | Preston Judd | Denver Pioneers | Sign. Judd was selected by the LA Galaxy in the second round of the 2021 MLS SuperDraft. | April 7, 2021 | [8] | |
| DF | Josh Drack | Denver Pioneers | Sign. Drack was selected by the LA Galaxy in the first round of the 2021 MLS SuperDraft. | April 26, 2021 | [9] | |
| MF | Rémi Cabral | Valenciennes | Sign. | April 27, 2021 | [10] | |
| DF | Owen Lambe | Cal State Fullerton Titans | Sign. | April 27, 2021 | [11] |
See main article: 2021 USL Championship season.
All times in Pacific Time Zone.