Bulbus may refer to:
Anatomy A bulb-shaped anatomical structure, including: bulbus, an archaic term for the medulla oblongata, as used for example in the term corticobulbar tract Bulbus arteriosus Bulbus cordis Bulbus duodeni Bulbus glandis Bulbus oculi Bulbus olfactorius Bulbus penis Bulbus pili Bulbus urethrae Bulbus vestibuli vaginae
Other Bulbus (gastropod), a genus of predatory sea snails Bulbus fritillariae cirrhosae, from Fritillaria plants