This page contains a list of the 669 portable programmable calculators that I know about. Early desktop models such as the HP-9100 or the Wang 700 are not included, as these cannot even be considered luggable.
Note that this list is being constantly updated as I learn about new models. If you notice anything that should be corrected, please send me a note: firstname.lastname@example.org. For the meaning of the abbreviations used in the list, please scroll to the bottom. Calculators whose name appears in italics are "unconfirmed sightings"; information on these models would be appreciated.