| Named By: | A. C. Daley & J. S. Peel in 2010 |
| Time Period: | Cambrian, Cambrian Stage 3 |
| Location: | Greenland - Buen Formation Formation |
| Size: | Reconstructed to be about 70 centimetres long |
| Diet: | Filter feeder |
| Fossil(s): | Fossils of at least two individuals |
| Classification: | | Arthropoda | Dinocaridida | Radiodonta | Anomalocarida | |
Tamisiocaris (see Latin tamisium, sieve) is an anomalocaridid taxon initially only known from non-segmented great appendages from Sirius Passet. Further specimens revealed that the appendages near their mouths were adapted to filter feed in a manner analogous to modern baleen whales.