Ladenbergia oblongifolia, many synonyms, including Ladenbergia gavanensis, is a species of plant in the family Rubiaceae. It is native to the north-west of South America: Bolivia, northern Brazil, Colombia, Ecuador, Peru and Venezuela.
Ladenbergia gavanensis was assessed as "vulnerable" in the 1998 IUCN Red List, where it is said to be native only to Peru., L. gavanensis was regarded as a synonym of Ladenbergia oblongifolia, which has a much wider distribution.