New Dayton is a hamlet in southern Alberta, Canada within the County of Warner No. 5. It is located on Highway 4 between the villages of Stirling and Warner, approximately southeast of Lethbridge. New Dayton was named for their former home by settlers from Dayton, Ohio.
New Dayton recorded a population of 47 in the 1991 Census of Population conducted by Statistics Canada.
The hamlet has a ball diamond, a campground and a postal outlet.