The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.

[4] The cluster spans about ten million light-years and has an unusually high proportion of dark matter.

[5] The cluster is part of the Hydra–Centaurus Supercluster located 158 million light-years from Earth.

The cluster's largest galaxies are elliptical galaxies NGC 3309 and NGC 3311 and the spiral galaxy NGC 3312 all having a diameter of about 150,000 light-years.

[6] In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.