Gregor Helfenstein

{{Infobox Christian leader

| type = Bishop

| honorific-prefix = Most Reverend

| name = Gregor Helfenstein

| title = Auxiliary Bishop Emeritus of Trier
Titular Bishop of Azotus

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| church = Catholic Church

| archdiocese =

| diocese = Diocese of Trier

| see =

| term = 1599–1632

| predecessor =

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| ordination =

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| consecration = 1 Nov 1599

| consecrated_by = Ottavio Paravicini

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| birth_date = 1559

| birth_place = Oberemmel, Germany

| death_date = 21 Oct 1632 (age 73)

| death_place = Trier, Germany

| previous_post =

| nationality = German

}}

Gregor Helfenstein (1559–1632) was a Roman Catholic prelate who served as Auxiliary Bishop of Trier (1599–1632).[http://www.catholic-hierarchy.org/bishop/bhelf.html "Bishop Gregor Helfenstein"] Catholic-Hierarchy.org. David M. Cheney. Retrieved August 29, 2016[http://www.catholic-hierarchy.org/diocese/dtrie.html "Diocese of Trier"] Catholic-Hierarchy.org. David M. Cheney. Retrieved February 29, 2016[http://www.gcatholic.org/dioceses/diocese/trie0.htm "Diocese of Trier"] GCatholic.org. Gabriel Chow. Retrieved February 29, 2016[http://www.catholic-hierarchy.org/diocese/d4a39.html "Azotus (Titular See)"] Catholic-Hierarchy.org. David M. Cheney. Retrieved February 29, 2016[http://www.gcatholic.org/dioceses/former/t0251.htm "Titular Episcopal See of Azotus"] GCatholic.org. Gabriel Chow. Retrieved February 29, 2016