| Stephen Ellefson | |
| Headercolor: | red |
| Nationality: | Canadian |
| Citizenship: | Canadian |
| Birth Date: | 16 October 1954 |
| Birth Place: | Edmonton, Alberta |
| Residence: | Calgary, Alberta |
| Height: | 183 cm |
| Weight: | 72 kg |
| Country: |  Canada |
| Sport: | Skiing Wheelchair athletics |
Stephen Ellefson (born October 16, 1954) is a Canadian Paralympic athlete. He competed in alpine skiing in the 1988 Winter Paralympics, winning a bronze medal. Later, he competed in wheelchair athletics events in the 1996 and 2000 Summer Paralympics, including the marathon.