Delphi City Hall

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

{{Infobox NRHP

| name = Delphi City Hall

| nrhp_type = cp

| nocat = yes

| image = Delphi City Hall.jpg

| caption =

| location = 105-109 Washington St., Delphi, Indiana

| coordinates = {{coord|40|35|12|N|86|40|26|W|display=inline,title}}

| locmapin = USA Indiana Carroll County#Indiana#USA

| built = {{Start date|1865}}, 1881

| architect OR builder =

| architecture = Italianate

| added = December 17, 1998

| area = less than one acre

| refnum = 98001525{{NRISref|version=2010a}}

}}

Delphi City Hall, also known as the Assian-Ruffing Building and Old City Hall-Opera House, is a historic city hall located at 105-109 Washington Street in Delphi, Indiana. It was built in 1865, and is a three-story, Italianate style red brick building. The third floor was remodeled for use as an opera house in 1881. The building was damaged by a fire in December 1914 and the third floor has remained vacant since.{{cite web| url = https://secure.in.gov/apps/dnr/shaard/welcome.html| title = Indiana State Historic Architectural and Archaeological Research Database (SHAARD) | publisher = Department of Natural Resources, Division of Historic Preservation and Archaeology | format = Searchable database| accessdate = 2015-07-01}} Note: This includes {{cite web| url =https://secure.in.gov/apps/dnr/shaard/r/21c70/N/Delphi_City_Hall_Carroll_CO_Nom.pdf | title = National Register of Historic Places Inventory Nomination Form: Delphi City Hall| accessdate = 2015-08-01| author =Martha B. Justice| format = PDF| date=August 1997}} and Accompanying photographs.{{rp|5, 7}}

It was listed on the National Register of Historic Places in 1998. It is located in the Delphi Courthouse Square Historic District.