Trimeniaceae is a family of flowering plants recognized by most taxonomists, at least for the past several decades.

It is a small family of one genus, Trimenia, with eight known species (Christenhusz & Byng 2016[1]) of woody plants, bearing essential oils.

The family is subtropical to tropical and found in Southeast Asia, eastern Australia and on several Pacific Islands.

The APG IV system, of 2016, recognizes this family and places it in order Austrobaileyales, an order which is accepted as being among the most basal lineages in the clade angiosperms.

The APG system, of 1998, also recognized this family, but left it unplaced as to order, and regarded it as being among the most basal lineages in the clade angiosperms.