MAMA'S BOY by LANY has sold 0 copies on streaming services.
MAMA'S BOY certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of |
| Total sales | 0 | Album-equivalent unit |
Total
Sales: 0
Album-equivalent unit
|
Year-end chart performance for MAMA'S BOY
| Chart 2020 | Rank | Sales |
 South Korean International Albums (Gaon) |
60 | 526 |