English: English: East Bay is a bay of the Bras d'Or Lake on Cape Breton Island in the Canadian province of Nova Scotia. It lies entirely within Cape Breton County.

East Bay is one of three long narrow arms that extend to the east of the main body of the Bras d'Or Lake, the others being St. Andrews Channel and Great Bras d'Or Channel. As East Bay is part of the Bras d'Or Lake system and the lake is essentially a fiordal system connected to the North Atlantic via two restricted channels at the Great Bras d'Or Channel north of Boularderie Island and the Little Bras d'Or Channel to south of Boularderie Island, the waters of East Bay are brackish, partially fresh/ salt water.

East Bay opens to the south-west directly onto the Bras d'Or Lake and lies between the Boisdale Hills to the north and the East Bay Hills to the south. The bay measures 8.3 kilometres (5.2 mi) wide at its mouth, between Benacadie Point to the north, and Middle Cape to the south and runs easterly 41 kilometres (25 mi) to its terminus at Portage. East Bay has 77.9 kilometres (48.4 mi) of shoreline.

The bay's shores are generally heavily wooded and consist mainly of bold and rocky shorelines interspersed with numerous barrachois (barrier) points and beaches. Glacial drumlin deposits form a group of islands along the northern shore of East Bay. The narrower eastern end of the bay is bridged by the East Bay Sandbar, running east-west 1.25 kilometres (0.78 mi).

Ben Eoin Provincial Park is a small secluded park on an old farm against hardwood-covered hills in the community of Ben Eoin, Nova Scotia, on the south side of the East Bay of the Bras d'Or Lake, Cape Breton Island, Canada.

This picnic and hiking park is managed by the provincial Department of Natural Resources and is situated on a heavily wooded 225 acres (91 ha) parcel of Crown land. A short distance into the park there are several large neatly mown clearings (former farm fields) with picnic tables under the trees at the edge of the small fields. Pit toilets and disposal areas for hot coals are available onsite.

Ben Eoin Provincial Park was established by Order in Council (OIC 75-167) on February 11, 1975.

Ben Eoin Provincial Park in one of few public parks adjacent to Bras d’Or Lake and is a comparatively short drive from the urban areas of the Cape Breton Regional Municipality. It is fairly well used by the public and also sees some use by school groups. Much of the park is undeveloped and so contributes to regional biodiversity by providing habitat for uncommon plants.