Hoya mariae, synonym Clemensiella mariae, is a species of plants in the family Apocynaceae, native to the Philippines.

[1] The species was first described by Rudolf Schlechter in 1915 as Clemensia mariae along with his new genus Clemensia.

The names honoured Mary Strong Clemens and her husband Joseph.

[2][3] However, the genus name turned out to be an illegitimate homonym (in other words, someone else had already used the name for a different plant), so Schlechter published the name Clemensiella for genus, making the species Clemensiella mariae.

[4][5] A 2011 molecular phylogenetic study showed that Clemensiella was embedded within Hoya, and Clemensiella mariae was transferred to Hoya as Hoya mariae.