| Juan José Elhuyar | |
| Birth Date: | 15 June 1754 |
| Birth Place: | Logroño |
| Death Date: | 20 September 1796 (age 42) |
| Death Place: | Santafé de Bogotá, New Granada |
| Nationality: | Spanish |
| Field: | Chemistry Mineralogy |
| Known For: | Tungsten |
Juan José Elhuyar Lubize (15 June 1754 - 20 September 1796) was a Spanish chemist and mineralogist, who was best known for being first to isolate tungsten with his brother Fausto Elhuyar in 1783.[1] [2]
He was born in Logroño, in northern Spain and died in Santafé de Bogotá, New Granada (present-day Colombia) at 42.