| Ross Lindsey Iams | |
| Birth Date: | 5 April 1881 |
| Birth Place: | Graysville, Pennsylvania, US |
| Death Place: | San Diego, California, US |
| Placeofburial: | Fort Rosecrans National Cemetery, San Diego, California |
| Medal: | US Navy Medal of Honor (1913 to 1942).png |
| Medal Size: | 70px |
| Branch: | United States Marine Corps |
| Serviceyears: | 1901 – 1932, 1942 |
| Rank: | Major |
| Unit: | 2nd Marine Regiment |
| Battles: | World War I Banana Wars |
| Awards: | Medal of Honor |
Ross Lindsey Iams (April 5, 1881 – March 25, 1952) was a United States Marine who received the Medal of Honor for actions in Haiti on November 17, 1915. Iams served for over 30 years in the Marine Corps, reaching the rank of major. Iams is buried in Fort Rosecrans National Cemetery in San Diego, California.
Iams was awarded the Medal of Honor for actions while a sergeant in the U.S. Marine Corps. His citation reads:
In company with members of the Fifth, Thirteenth, Twenty-Third Companies and Marine and sailor detachment from the, Sergeant Iams participated in the attack on Fort Riviere, Haiti, November 17, 1915. Following a concentrated drive, several different detachments of Marines gradually closed in on the old French bastion fort in an effort to cut off all avenues of retreat for the Caco bandits. Approaching a breach in the wall which was the only entrance to the fort, Sergeant Iams unhesitatingly jumped through the breach despite constant fire from the Cacos and engaged the enemy in a desperate hand-to-hand combat until the bastion was captured and Caco resistance neutralized.