Southern Churchill
Petrocephalus wesselsi
- Least concern
- Card rarity: Common
- Fish

Petrocephalus wesselsi, commonly known as the Southern Churchill, is a species of weakly electric fish in the family Mormyridae, commonly known as elephantfishes. This species was described in 2000 by Kramer and van der Bank.
Classification
- Class
- Actinopterygii
- Order
- Osteoglossiformes
- Family
- Mormyridae
- Genus
- Petrocephalus