Compsosaris flavidella is a moth in the family Gelechiidae. It was described by August Busck in 1914. It is found in Panama."Compsosaris Meyrick, 1914" at Markku Savela's Lepidoptera and Some Other Life Forms. Retrieved July 7, 2017.

The wingspan is about 7 mm. The forewings are light ochreous, suffused on the costal and apical half with darker ochreous. On the middle of the cell is a small black dot and below it on the fold is a tuft of raised scales. At the end of the cell are two, small black dots, one above the other, below which a tuft of raised scales, narrowly edged with black. There is also an inconspicuous, outwardly oblique black streaklet on the middle of the costa and a similar, but much more pronounced black streak at the apical fourth, reaching nearly to the termen and edged posteriorly with light ochreous. Around the apical edge is a series of short black lines. The hindwings are light ochreous fuscous.Proceedings of the United States National Museum 47 (2043): 12

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