| Jackie Powell | |
| Birth Name: | John Mercer Powell |
| Birth Place: | Cape Town, South Africa |
| Birth Date: | 12 December 1871 |
| Ru Position: | Inside centre Fly-half |
| Repteam1: | South Africa |
| Repyears1: | 1891 - 1903 |
| Repcaps1: | 4 |
| Ru Ntupdate: | 15 October 2007 |
| Ru Province1: | Griquas |
John "Jackie" Powell (12 December 1871 – 19 December 1955) was a rugby union player who represented South Africa 4 times, once as captain. At 19 years 260 days, he is one of the youngest ever players to have represented South Africa. He also played first-class cricket for Griqualand West.
Powell attended St. Andrew's College, Grahamstown in 1890.
. The Boy in You: A Biography of St. Andrew's College, 1855-2005. 2008. Fernwood Press. 978-1-874950-86-8. Marguerite Poland.