Alabama State Route 178

{{short description|State highway in Alabama, United States}}

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

{{Use mdy dates|date=January 2025}}

{{Infobox road

|state=AL

|type=AL

|route=178

|map={{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|type=line|from=Alabama State Route 178.map}}

|map_custom=yes

|maint=ALDOT

|length_mi=1.956

|length_ref={{cite web|url=http://aldotgis.dot.state.al.us/milepostinternet/default.aspx |title=Milepost Maps |last=Alabama Department of Transportation |author-link=Alabama Department of Transportation |accessdate=April 2, 2011 |url-status=dead |archiveurl=https://web.archive.org/web/20110727134739/http://aldotgis.dot.state.al.us/milepostinternet/default.aspx |archivedate=July 27, 2011 }}

|established=

|decommissioned=

|direction_a=West

|terminus_a={{jct|state=AL|US|43}} at Fulton

|direction_b=East

|terminus_b=Main Street in Fulton

|counties=Clarke

|previous_type=AL

|previous_route=177

|next_type=AL

|next_route=179

}}

State Route 178 (SR 178) is a {{convert|1.956|mi|km|adj=mid|-long}} route in Clarke County in the southwestern part of the state. The western terminus of the route is at its junction with US 43 north of Grove Hill. The route ends at the city center of Fulton.