| Eric Johnston | |
| Birth Name: | Percy Eric Johnston |
| Nationality: | Australian |
| Sport: | Water polo |
| Birth Date: | 24 February 1914 |
| Birth Place: | Leichhardt, New South Wales, Australia |
| Death Place: | Sydney, Australia |
Percy Eric Johnston (24 February 1914 – 16 March 2005) was an Australian water polo player. He competed in the men's tournament at the 1948 Summer Olympics.[1]