Marker 32 is a coral reef located within the Florida Keys National Marine Sanctuary. It lies to the south of Key West, and is between Western Sambo reef and 9-Foot Stake reef. Unlike many reefs in the Sanctuary, it is not within a Sanctuary Preservation Area (SPA).

The reef is close to navigational marker 32.

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  NOAA map of the reef
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  A large colony of pillar coral (Dendrogyra cylindrus) at Marker 32 reef, June 2010
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  A small colony of pillar coral at Marker 32 reef, June 2010
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  Large barracuda at Marker 32 reef, June 2010
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  Endangered Nassau grouper (Epinephelus striatus) at Marker 32 reef, June 2010

• NOAA National Marine Sanctuary Maps, Florida Keys East
• NOAA Map of buoys at Marker 32
• NOAA Navigational Chart 11441