| Koshigaya Alphas | |
| Founded: | 1997 |
| History: | Otsuka Corporation Alphas (1997–2018) Otsuka Corporation Koshigaya Alphas (2018–2019) Koshigaya Alphas (2019–present) |
| Division: | First |
| Conference: | East |
| Location: | Koshigaya, Saitama |
| Arena: | Koshigaya Municipal General Gymnasium |
| Capacity: | 4,472 |
| Gm: | Kazuto Aono |
| Coach: | Sho Higashijima |
| H Body: | 440000 |
| H Pattern B: | _KOSHIGAYA ALPHAS 22-23 HOME |
| H Shorts: | 440000 |
| H Pattern S: | _KOSHIGAYA ALPHAS 22-23 HOME |
| A Pattern B: | _KOSHIGAYA ALPHAS 22-23 AWAY |
| A Pattern S: | _KOSHIGAYA ALPHAS 22-23 AWAY |
The Koshigaya Alphas is a professional basketball team that competes in the first division of the Japanese B.League.[1]