Puccinia namua is a species of rust fungus on Leptocarpus in New Zealand. It was formally described as a new species in 1924 by the mycologist Gordon Herriot Cunningham.
A small orange rust that exists on the stems of Anisotome filifolia.
South Island of New Zealand. Its known habitat is in alpine environments, where Anisotome grows. It is not known from other hosts.