The thick-billed grasswren is a species of bird in the family Maluridae. It is endemic to Australia. Its natural habitat is Mediterranean-type shrubby vegetation.

The western grasswren, also referred to as the thick-billed grasswren and, formerly, as the textile wren, is a species of bird in the family Maluridae. It is endemic to Australia. It was formerly lumped as the nominate subspecies of the thick-billed grasswren.