The pied monarch (Arses kaupi) is a species of bird in the monarch-flycatcher family, Monarchidae. It is endemic to coastal Queensland in Australia.
The pied monarch is 15–16 cm in length and weighs around 12.5–15 g. The plumage is sexually dimorphic. The upperparts and head of the male are black, as is the tail, and the wings are brownish-black with white scapulars (which shows as a white crescent across the back when folded). The collar, which is erectable, is white, and it joins through the neck with a white throat. The breast-band is black, and the belly and underside are white. In the female the white on the throat and collar is less distinct and covers less area, and the collar is incomplete around the neck. The eye is black, and is surrounded by a blue coloured eye-ring, which is less distinct in the female. The bill is blue-grey, and the legs are black. Immature birds look like females but with duller plumage, no blue in the eye-rings, and a horn-coloured bill. Like other members of the genus it has long hind-toes and claws, and in general the size and shape of the feet resemble those of the Australasian treecreepers, and the feet are used for feeding in the same manner on the trunks of trees.