Dundas is an unincorporated community in Vinton County, in the U.S. state of Ohio.
[1] It is located near the junction of State Route 324 and State Route 93.
Dundas was established in 1857 as McArthur Junction when the B&O railroad was extended to that point.
[2] A post office called Dundas was established in 1856 and remained in operation until 1983.
This Vinton County, Ohio state location article is a stub.