Warszewiczia (or Warscewiczia) is a genus of flowering plants in the family Rubiaceae.

Perhaps the most famous member of the genus is W. coccinea (chaconia), which is the national flower of Trinidad and Tobago.

The inflorescences show leaf-shaped, bright-colored calycophylls, expanded foliaceous structures made from floral petaloids with enlarged showy calyx-lobes.

This genus was named after Józef Warszewicz, a 19th-century Polish orchid collector and inspector of the botanic gardens in Kraków, Poland.

Warszawa is also the Polish name for Warsaw – capital city of Poland.