Charles Whitman Cross | |
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| Born | September 1, 1854 Amherst, Massachusetts, U.S. |
| Died | April 20, 1949 (aged 94) Chevy Chase, Maryland, U.S. |
| Nationality | American |
| Alma mater | Amherst College; Leipzig University |
| Scientific career | |
| Fields | Petrology |
| Institutions | United States Geological Survey |
| Doctoral advisor | Ferdinand Zirkel |
Charles Whitman Cross (September 1, 1854 – April 20, 1949) was an American geologist. He was educated at Amherst College, the University of Göttingen, and Leipzig University. A petrologist, much of his field work concerned rocks in Colorado. He and three other geologists proposed the CIPW norm that is still used in normative mineralogy. He was also active in scientific societies and institutions.