Carpo, also known as Jupiter XLVI, is a natural satellite of Jupiter. It was discovered in 2003 by a team of astronomers from the University of Hawaii, led by Scott S. Sheppard in 2003. It was previously known as 'S/2003 J 20', until it received its name in 2005.

Carpo is about 3 kilometres (1.9 miles) in diameter, and orbits Jupiter at an average distance of 17.145 Gm in 458.625 days, at an inclination of 56° to the ecliptic (55° to Jupiter's equator), and with a high eccentricity of 0.4316. All of the moons further from Jupiter than Carpo are retrograde.