Tillandsia marnieri-lapostollei is a species of flowering plant in the family Bromeliaceae. It is endemic to Ecuador. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss.
Tillandsia marnieri-lapostollei was first described in 1972 by Werner Rauh. However, this description did not include the then-required Latin diagnosis and so was invalid. Rauh validated the name in 1973.[1] The specific epithet marnieri-lapostollei honours Julien Marnier-Lapostolle, a bromeliad collector and owner of Jardin botanique "Les Cèdres".[2]