Platt Island

{{Use mdy dates|date=August 2023}}

{{Infobox NRHP

| name = Platt Island

| image = PlattIsland.jpg

| caption =

| location = Collier County, Florida

| locmapin = Florida#USA

| nearest_city = Miles City

| coordinates = {{coord|26.212863|-81.304242|display=inline,title}}

| area =

| added = December 14, 1978

| visitation_num =

| visitation_year =

| refnum = 78000934{{NRISref|version=2010a}}

}}

Platt Island is an archaeological site off Florida State Road 29 in Collier County north of Miles City. It was added to the U.S. National Register of Historic Places in 1978. Ceramic fragments dated to about 2500 years old were found at the site, which is in the Big Cypress National Preserve.{{cite book |last=Widmer |first=Randolph J. |date=1988 |title=Evolution of the Calusa: a Stratified Non-Agricultural Chiefdom on the Southwest Florida Coast |url=https://archive.org/details/evolutioncalusan00widm |url-access=limited |publisher=University of Alabama Press |page=[https://archive.org/details/evolutioncalusan00widm/page/n90 72] |chapter=The Prehistory of Southwest Florida}}