Duff, Indiana

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

{{Use mdy dates|date=July 2023}}

{{Infobox settlement

|official_name = Duff, Indiana

|settlement_type = Unincorporated community

|motto =

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|pushpin_map = Indiana#USA

|pushpin_label = Duff

|pushpin_label_position =

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|subdivision_type = Country

|subdivision_name = United States

|subdivision_type1 = State

|subdivision_name1 = Indiana

|subdivision_type2 = County

|subdivision_name2 = Dubois

|subdivision_type3 = Township

|subdivision_name3 = Patoka

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|timezone = Eastern (EST)

|utc_offset = -5

|timezone_DST = EDT

|utc_offset_DST = -4

|coordinates = {{coord|38|19|38|N|87|01|35|W|region:US-IN|display=inline,title}}

|elevation_footnotes =

|elevation_ft = 466

|founder =

|named_for =

|postal_code_type = ZIP code

|postal_code = 47542

|area_code = 812, 930

|blank_name = FIPS code

|blank_info = 18-18874{{cite web |url=https://www.census.gov |publisher=United States Census Bureau |accessdate=2008-01-31 |title=U.S. Census website }}

|blank1_name = GNIS feature ID

|blank1_info = 433754{{GNIS|433754}}

|website =

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Duff is an unincorporated community in Patoka Township, Dubois County, in the U.S. state of Indiana.