Cavendish Beach, Atlantic beach in Cavendish, Canada

Cavendish Beach is a natural sand beach in Prince Edward Island National Park, fronting the Gulf of St. Lawrence. It runs 8 kilometres from the entrance to New London Bay west to the red sandstone cliffs at Cavendish East. Its sections are Cavendish Spit, Cavendish Campground Beach and Cavendish Main Beach, where a boardwalk crosses the dunes between MacNeill's Pond and Clark's Pond.

The area became protected as part of a national park in the 1930s to safeguard the coastal landscape. This marked the start of organized conservation efforts for both recreation and environmental preservation.

Cavendish takes its name from the Cavendish family, and the beach sits beside the community of the same name. Lucy Maud Montgomery, who wrote Anne of Green Gables, grew up in Cavendish and set her novel in this part of Prince Edward Island; the beach lies within the national park that protects the surrounding coast.

Cavendish Main Beach, at the end of Graham's Lane, has extensive parking and a complex with changing rooms, washrooms and a canteen. A boardwalk carries beachgoers over the fragile dunes that separate the sand from MacNeill's Pond to the southeast and Clark's Pond to the southwest.

Cavendish Beach is split into three named sections: Cavendish Spit, a barrier beach guarding the mouth of New London Bay; Cavendish Campground Beach just east of it; and Cavendish Main Beach at the end of Graham's Lane, where a boardwalk crosses the dunes between MacNeill's Pond and Clark's Pond.