A lifeguard made the discovery along 31st Avenue North.
The urn is solid brass, rimmed in mother-of-pearl and weighs about 15 pounds.
It did not contain identification linking it to the ashes. After cremation, there is no DNA.
This is the first time an urn has been found on the beach along Horry County, according to coroner Robert Edge.
The urn is now at his office and he will keep it until it is claimed.