The rufous-booted racket-tail (Ocreatus addae) is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae.

[4][5] The rufous-booted racket-tail, as defined by the International Ornithological Committee (IOC) and the Clements taxonomy, is one of three species in genus Ocreatus.

However, BirdLife International's Handbook of the Birds of the World (HBW) treats the taxon as one of eight subspecies of booted racket-tail (O. underwoodii).

Only the male has elongated outer rectrices (tail feathers) that have bare shafts with terminal flags.

Both sexes of annae and addae have greenish upperparts without a glittering forehead, both have a white spot behind the eye, and both have buff leg puffs.

[9][10] The annae rufous-booted racket-tail is found on the east slope of the Andes of central and southern Peru.

It makes a tiny cup nest of plant fiber and lichen, typically on a horizontal twig 6 to 8 m (20 to 30 ft) above the ground.

Both male and female rufous-booted racket-tails give "a diagnostic, descending, thin sweet trill, 'ti-tlee-ee-ee' [and] single 'tsit' and 'trrt' notes.