The Bay of Haifa or Haifa Bay, formerly Bay of Acre, is a bay along the Mediterranean coast of Northern Israel. Haifa Bay is Israel's only natural harbor on the Mediterranean.

A harbor, or harbour, is a sheltered body of water where ships, boats, and barges can be moored. The term harbor is often used interchangeably with port, which is a man-made facility built for loading and unloading vessels and dropping off and picking up passengers. Harbors usually include one or more ports. Alexandria Port in Egypt is an example of a harbor with two ports.