Shiraoi (白老郡, Shiraoi-gun) is a district located in Iburi Subprefecture, Hokkaido, Japan.
As of 2004, the district has an estimated population of 20,866 and a density of 49.01 persons per km2. The total area is 425.75 km2.
42°33′N 141°15′E / 42.550°N 141.250°E / 42.550; 141.250