State Road 573 (NM 573) is a 2.22-mile-long (3.57 km) state highway in the US state of New Mexico.

NM 573's southern terminus is at NM 162 in Tierra Amarilla, and the northern terminus is a continuation as County Route 331 (CR 331) at the intersection of CR 327 north of Tierra Amarilla.

CR 331 continues north to NM 512.

NM 573 was created in 1988 after NM 162's northern terminus was changed to its current location.

[2][3] The entire route is in Rio Arriba County.