Anax walsinghami is a species of dragonfly in the family Aeshnidae (darners), in the suborder Anisoptera ("dragonflies").

[2][3] The species is known generally as the giant darner or giant green darner.

[4] The distribution range of Anax walsinghami includes Central America and North America.

[3] At up to 120 mm (4.7 in) in wingspan and with a typical body length of 89–117 mm (3.5–4.6 in), it is North America's largest dragonfly,[2][5] although exceeded by the closely related giant Hawaiian darner (A.

[6] The IUCN conservation status of A. walsinghami is least concern, with no immediate threat to the species' survival.