| Order: | 7th |
| Ambassador From: | United States |
| Country: | Algeria |
| Term Start: | August 12, 1988 |
| Term End: | August 14, 1991 |
| Predecessor: | L. Craig Johnstone |
| Successor: | Mary Ann Casey |
| Ambassador From2: | United States |
| Country2: | Syria |
| Term Start2: | August 2, 1991 |
| Term End2: | March 22, 1998 |
| Predecessor2: | Edward Djerejian |
| Successor2: | Ryan Crocker |
| Birth Date: | 3 March 1943 |
| Birth Place: | Quito, Ecuador |
| Profession: | Diplomat, Career Ambassador |
| Office3: | 10th Coordinator for Counterterrorism |
| Term Start3: | March 30, 1998 |
| Term End3: | December 13, 1998 |
| Preceded3: | Philip C. Wilcox Jr. |
| Succeeded3: | Michael A. Sheehan |
Christopher W. S. Ross (born October 4, 1943) is an Ecuadorian-born American former diplomat who served as United States Ambassador to Algeria and Syria. On January 7, 2009, he was appointed as the UN envoy to Western Sahara. He resigned in March 2017.[1]
He was until recently a special adviser for the Middle East and North Africa at the U.S. mission to the United Nations. His father was Ambassador Claude Gordon "Tony" Ross. In 2003 he was the US State Department Senior Adviser for Arab World Public Diplomacy.[2]