| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Larus occidentalis | Audubon, 1839 | accepted name | Yes | senior synonym |
original combination |
| Larus occidentalis occidentalis | Audubon, 1839 | accepted name | No | senior synonym |
original combination |
| Larus occidentalis wymani | Dickey & Van Rossem, 1925 | accepted name | No | senior synonym |
original combination |