USCGC Alder can refer to the following ships of the United States Coast Guard:
- USCGC Alder (WAGL-216), a lighthouse tender launched in 1917 for the United States Lighthouse Service. The vessel was acquired in 1922 by the United States Coast Guard and remained in service until sunk by a German U-boat on 15 March 1942.
- USCGC Alder (WLB-216), a Juniper-class buoy tender launched in 2004.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.