Only one. The Moon
The Sun has no moons. Moons orbit Planets > Planets orbit the Sun.
27 moons orbit Uranus that we know of
169 moons.
There are no known moons in orbit around Venus.
There are 180 moons in our solar system.
62 moons orbit Saturn, 67 orbit Jupiter, 5 orbit Pluto, 14 orbit Neptune, and 27 orbit Uranus.
None.
Asteroids orbit the sun. Moons orbit planets and planets orbit the sun. So you could say the moons orbit the sun. However, moons are kept in their orbits by the gravity of their planet and planets are kept in orbit by the gravity of the sun. So in that sense, moons do not orbit the sun.
Mars itself is a planet. If you are asking how many moons it has, it has two moons that orbit it.
63 known moons orbit Jupiter.
49 moons as of January 2009, 14 are still in consideration
No planets orbit around Mars. There are two moons that orbit around Mars.