Arthur Gray Leonard | |
|---|---|
 Leonard c. 1910 | |
| Born | March 15, 1865 |
| Died | December 17, 1932 (aged 67) |
| Alma mater | Johns Hopkins University |
| Known for | Geology of lignite coal |
| Scientific career | |
| Fields | Geology |
Arthur Gray Leonard (March 15, 1865 – 17 December 1932) was an American researcher, geologist and educator.
The first State Geologist of North Dakota, he was also a professor of geology at the University of North Dakota and made contributions to the knowledge of lignite coal and its relation to geologic time.