Tilioideae is a flowering plant subfamily in the family Malvaceae, though it was formerly considered a large group, placed at family rank and called Tiliaceae.

Within the framework of the Angiosperm Phylogeny Groups III & IV systems, an extended family Malvaceae is recognized by uniting the core Malvales of the Cronquist system - Bombacaceae, Malvaceae sensu stricto, Sterculiaceae and Tiliaceae. Within the APG classification, Malvaceae contains a clade of 3 living genera placed as the subfamily Tilioideae.

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