Merritt Island is a census-designated place located in Brevard County, Florida, United States. It is situated on the Space Coast, approximately 15 miles east of Titusville and 65 miles east of Orlando. The island is bordered by the Indian River Lagoon to the west, the Atlantic Ocean to the east, and the Banana River to the south.

Merritt Island is classified as a coastal community and is known for its natural habitats and wildlife refuges. The Merritt Island National Wildlife Refuge, which covers a significant portion of the island, is a protected area that provides a habitat for numerous species of birds, including endangered and threatened species. The refuge is also home to alligators, manatees, and other wildlife.

The island has a rich history, with evidence of human habitation dating back to the 18th century. Merritt Island was once a major producer of citrus fruits, but the industry declined in the mid-20th century. Today, the island is primarily residential, with a mix of single-family homes, waterfront properties, and rural areas.

Merritt Island is perhaps best known for its proximity to the Kennedy Space Center, which is located on the north end of the island. The space center has been the launch site for numerous historic space missions, including the Apollo and Space Shuttle programs. The island's unique combination of natural and man-made features makes it a popular destination for tourists and nature enthusiasts.