Atsushi Obayashi
| Personal information | |
|---|---|
| Born | 24 February 1943 |
| Sport | |
| Sport | Swimming |
| Strokes | butterfly |
Atsushi Obayashi (大林 敦, Ōbayashi Atsushi; born 24 February 1943) is a Japanese former butterfly swimmer. He competed in the men's 200 metre butterfly at the 1964 Summer Olympics.