| Named By: | Tai Kubo, Mark T. Mitchell & Donald M. Henderson in 2012 |
| Time Period: | Late Cretaceous, 73.5 Ma |
| Location: | Canada, Alberta - Bearpaw Formation |
| Size: | About 11.5 - 12 meters long |
| Diet: | Piscivore |
| Fossil(s): | Almost complete post cranial skeleton |
| Classification: | | Chordata | Reptilia | Sauropterygia | Plesiosauria | Elasmosauridae | |
Albertonectes is an extinct genus of elasmosaurid plesiosaur known from the Late Cretaceous (middle upper Campanian stage) Bearpaw Formation of Alberta, Canada. It contains a single species, Albertonectes vanderveldei. Albertonectes is the longest elasmosaur, and more generally plesiosaur, known to date both in neck and total body length.