| Union Sekailwe | |
| Headercolor: | yellow |
| Nationality: | South African |
| Sport: | Paralympic athletics |
| Event: | Sprint |
| Disability Class: | T38 |
| Club: | AngloGold Ashanti Sport Club for the Disabled |
| Coach: | Alta Oelofse |
| Birth Date: | 6 January 1986 |
| Country: | South Africa |
Union Sekailwe (born 6 January 1986) is a Paralympian athlete from South Africa competing mainly in category T38 sprint events.[1] Sekailwe competed for his country at the 2012 Summer Paralympics in London, where he won a bronze medal in the 400 metre sprint.[2] Sekailwe has competed at World Championship level on two occasions, picking up three medals. He has also competed in long jump at the Paralympics, and in the javelin throw at the World Championships.[2]