Atlético San Luis Transfers In
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 30 Jul 2026 | Felipe Mora | Portland Timbers | Atlético San Luis | Unknown |
| 17 Jul 2026 | Diego Urtiaga | Inter Toronto | Atlético San Luis | – |
| 16 Jul 2026 | Johan Caicedo | Deportivo Pasto | Atlético San Luis | – |
| 1 Jul 2026 | Rafa Llorente | Atlético Madrileño | Atlético San Luis | Free |
| 30 Jun 2026 | Iker Moreno | Club Puebla | Atlético San Luis | – |
| 30 Jun 2026 | Ronaldo Nájera | Atlético Madrileño | Atlético San Luis | – |
| 10 Feb 2026 | Jesús Medina | Damac FC | Atlético San Luis | Free |
| 29 Jan 2026 | Lucas Esteves | Grêmio | Atlético San Luis | Unknown |
| 8 Jan 2026 | Roberto Meraz | Mazatlán FC | Atlético San Luis | Unknown |
| 7 Jan 2026 | Santiago Muñoz | Santos Laguna | Atlético San Luis | – |
| 1 Jan 2026 | Kevin Ortega | Atletico San Luis U23 | Atlético San Luis | – |
| 1 Jan 2026 | Benjamín Galindo | Cancún FC | Atlético San Luis | Unknown |
| 1 Jan 2026 | Leonardo Flores | Tigres UANL | Atlético San Luis | Unknown |