Ralphsnyder Decagonal Barn

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

{{Infobox NRHP

| name = Ralphsnyder Decagonal Barn

| nrhp_type =

| image = Ralphsnyder Decagonal Barn.jpg

| caption =

| location= County Route 52/2, near Masontown, West Virginia

| coordinates = {{coord|39.5528|-79.7631|display=inline,title}}

| locmapin = West Virginia#USA

| built = 1890

| architect = Scott, Carl

| added = December 2, 1985

| area = less than one acre

| mpsub = {{NRHP url|id=64000963|title=Round and Polygonal Barns of West Virginia TR}}

| refnum = 85003111{{NRISref|version=2010a}}

}}

Ralphsnyder Decagonal Barn is a historic decagonal shaped barn located near Masontown, Preston County, West Virginia. The 10-sided barn was built in 1890, and is a frame building with an unusual steeple-shaped cupola. The barn was moved to its present site in 1981, which necessitated a number of replacements of portions of the original structure and roof. It is the only 10-sided barn known to have been constructed in West Virginia.{{cite web|url=https://wvculture.org/wp-content/uploads/2021/03/Ralphsnyder-decagonal-barn.pdf|title=National Register of Historic Places Inventory Nomination Form: Ralphsnyder Decagonal Barn|date=September 1984|accessdate=2011-09-01 |author=Ralph Pederson and Margo Stafford|publisher=State of West Virginia, West Virginia Division of Culture and History, Historic Preservation}}

It was listed on the National Register of Historic Places in 1985.