The Most Reverend Nicolaus Aloysius Gallagher | |
|---|---|
| Bishop of Galveston | |
 | |
| Church | Roman Catholic Church |
| See | Diocese of Galveston |
| In office | December 16, 1892 January 21, 1918 |
| Predecessor | Claude Marie Dubuis |
| Successor | Christopher Edward Byrne |
| Other post(s) | Coadjutor Bishop of Galveston 1882 to 1892 |
| Orders | |
| Ordination | December 25, 1868 by Sylvester Horton Rosecrans |
| Consecration | April 30, 1882 by Edward Fitzgerald |
| Personal details | |
| Born | February 19, 1846 |
| Died | January 21, 1918 (aged 71) Galveston, Texas, US |
| Education | Mount St. Mary's of the West Seminary |
| Signature | .png){kind=small} |
Nicolaus Aloysius Gallagher (February 19, 1846 – January 21, 1918) was an American prelate of the Roman Catholic Church. He served as bishop of the Diocese of Galveston in Texas from 1892 until his death in 1918.