Ruba may refer to:
People Máel Ruba (642–722), Irish saint Ruba Ghazal (born 1977), Canadian politician Ruba Katrib, American curator Ruba Marshood, CEO of Indiana literacy nonprofit Indy Reads Ruba Nadda (born 1972), Canadian film director
Places Ruba, Belarus Ruba Parish, Latvia
Science Rubredoxin A, protein component of photosynthesis Ruba (fly), a genus of insects in the family Stratiomyidae
Other uses Ullucus, a genus of plants grown mainly for its use as a root vegetable