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- Merritt Island, Brevard
- (Monroe County) Mission Bay
- (Miami-Dade County) Mashta Island
- (Baxter County) Majette
- (Macon County) Middle Torch Key
- (Sumter County) Mabel
- (Jackson County) MacKeever Keys
- (Winston County) Macom
- (Jefferson County) Macon
- (Morgan County) Madelaine Key
- (Miami-Dade County) Maderia Hammock
- (Baxter County) Magnolia Beach
- (Coosa County) Magnolia Bluffs
- (Houston County) Magnolia Island
- (Cherokee County) Magnolia Springs
- (Miami-Dade County) Mahogany Hammock
- (Macon County) Main Key
- (Coffee County) Magnolia Gardens
- (Dale County) Majette
- (Mobile County) Makinson Island
- (Greene County) Mallory Heights
- (Macon County) Mallory Key
- (Morgan County) Malone Island
- (Arkansas County) Malore Gardens
- (Macon County) Man Key
- (Macon County) Man of War Key
- (Saint Clair County) Manasota
- (Saint Clair County) Manasota Beach
- (Saint Clair County) Manasota Key
- Ver todas