55 Cancri b, occasionally designated 55 Cancri Ab, also named Galileo, is an exoplanet orbiting the Sun-like star 55 Cancri A every 14.65 days. It is the second planet in order of distance from its star, and is an example of a hot Jupiter, or possibly rather "warm Jupiter".

Distance to Earth: 40.12 light years

Discovered: April 12, 1996

Orbital period: 15 days

Apparent magnitude (V): 5.95

Star: 55 Cancri A

Discoverers: Geoffrey Marcy, R. Paul Butler