Boca Chita Key is the island north of the upper Florida Keys in Biscayne National Park, Miami-Dade County, Florida.
The key is located in Biscayne Bay, just north of Sands Key. An ornamental 65-foot lighthouse is present on the key.The harbor has a bulkhead with cleats where boats may be tied.There is a camp ground with picnic tables and salt water toilets. Fresh water and electricity are not available on the island.
On the north-west part of the island is the Boca Chita Key Historic District containing historic structures such as the Boca Chita lighthouse.
This key is sometimes confused with the similar sounding Boca Chica Key over a hundred miles southwest on the lower Florida Keys