There are five officially recognized dwarf planets in our solar system. These are:

1. Ceres: Ceres is the largest object in the asteroid belt between Mars and Jupiter. It was classified as a dwarf planet in 2006.

2. Pluto: Pluto was once considered the ninth planet in our solar system, but in 2006 it was reclassified as a dwarf planet. It is located in the Kuiper Belt, beyond the orbit of Neptune.

3. Haumea: Haumea is a dwarf planet located in the Kuiper Belt. It is notable for its elongated shape and rapid rotation.

4. Makemake: Makemake is another dwarf planet located in the Kuiper Belt. It is known for its reddish color.

5. Eris: Eris is the largest dwarf planet in our solar system. It is located in the Kuiper Belt and was discovered in 2005.

Each of these dwarf planets has unique characteristics and features that make them interesting objects of study. While they are not considered full-fledged planets, they are still important members of our solar system.

There are currently five planets classified as dwarf planets: Ceres, Pluto, Makemake, Haumea and Eris.