| Coast and Geodetic Survey Defense Service Medal | |
|---|---|
  The obverse (left) and reverse of the medal. The reverse is blank, but has been marked by a written notation. | |
| Type | Service award |
| Awarded for | Service during the national emergency prior to the U.S. entry into World War II |
| Country | United States |
| Presented by | United States Coast and Geodetic Survey |
| Eligibility | Personnel of the U.S. Coast and Geodetic Survey |
| Status | Obsolete |
| Established |
|
 Ribbon of the medal. | |
| Precedence | |
| Next (higher) | C&GS Good Conduct Medal[1] |
| Next (lower) | C&GS Atlantic War Zone Medal[1] |
The Coast and Geodetic Survey Defense Service Medal is a decoration of the United States Coast and Geodetic Survey presented to personnel of the Coast and Geodetic Survey for service during the national emergency prior to the entry of the United States into World War II.