José Joaquín de Ferrer (Gipuzkoa, October 26, 1763 – Bilbao, May 18, 1818) was a Spanish astronomer.
The Spanish astronomer was part of the first solar eclipse expeditions. He journeyed to Cuba in 1803 and to New York State in 1806 and observed the two solar eclipses successfully. In the description of the solar eclipse in 1806 observed from Kinderhook, New York he coined the word corona[1] for the bright ring observable during a total eclipse.[2][3]