Jansen's Wrasse
Thalassoma jansenii
- Least concern
- Card rarity: Common
- Fish

Jansen's wrasse is a species of ray-finned fish, a wrasse from the family Labridae which is native to the Indian Ocean and Pacific Ocean. In the south-western Pacific Ocean it is replaced by sibling species black-barred wrasse. It can be found in the aquarium trade.
Classification
- Class
- Actinopterygii
- Order
- Labriformes
- Family
- Labridae
- Genus
- Thalassoma