Scoparia tritocirrha is a moth in the Crambidae family. It was described by Turner in 1918. It is found in Australia, where it has been recorded from Norfolk Island. The wingspan is about 14 mm. The forewings are grey with a short longitudinal pale-yellowish line, edged with blackish. There is a broader yellowish longitudinal line before the middle beneath the cell, this line is also edged with blackish. There is a narrowly oval longitudinal yellowish median spot beyond the middle, edged with blackish an there are blackish dots on the costa. The hindwings are pale-grey.