Halsey Brook

{{Use American English|date=February 2025}}

{{Infobox river

| name = Halsey Brook

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| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = New York

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| mouth = East Kill

| mouth_location = East Jewett, United States

| mouth_coordinates = {{coord|42|13|59|N|74|08|22|W|display=inline,title}}

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| basin_size_mi2 = 1.35

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Halsey Brook converges with East Kill near East Jewett.{{cite web

| url = https://waterdata.usgs.gov/nwis/nwismap/?site_no=0134965505&agency_cd=USGS

| title = Halsey Brook

| date = 1995

| website = usgs.gov

| publisher = usgs

| access-date = 23 April 2017

| quote = data}}