The Large-billed Scrubwren (Sericornis magnirostris) is a bird species. Placed in the family Pardalotidae in the Sibley-Ahlquist taxonomy, this has met with opposition and indeed is now known to be wrong; they rather belong to the independent family Acanthizidae.

Described by ornithologist John Gould in 1838, it is endemic to Australia. It is found in denser undergrowth in temperate forests, subtropical or tropical moist lowland forests, and subtropical or tropical moist montane forests.