International Palaeontological Association
- Professional organization promoting international cooperation in palaeo, publishes Lethaia.
- http://ipa.geo.ku.edu/

Dinosaur Society
- Member based charitable dinosaur society providing articles, pictures, links, and information on exhibitions and new discoveries.
- http://www.dinosaursociety.com

Association of Australasian Palaeontologists
- Professional organization for paleontologists based in Australia; publishes Alcheringa.
- http://www.es.mq.edu.au/MUCEP/aap/index.htm

Asociación Paleontológica Argentina
- Professional organization for paleontologists, based in Argentina; publishes Ameghiniana.
- http://www.apaleontologica.org.ar/

Southern California Paleontological Society
- Amateur collectors group in the LA area.
- http://members.aol.com/scpaleo/

The Palaeontological Association
- Professional organization for paleontologists (both vertebrate and invertebrate), publishes Palaeontology.
- http://www.palass.org/

Society of Vertebrate Paleontology
- Professional, international organization for VPs, publishes the Journal of Vertebrate Paleontology.
- http://www.vertpaleo.org/