Shiroishi-ku (白石区) is one of the ten wards in Sapporo, Hokkaido, Japan. As of August 31, 2021, the ward has a population of 213,704.

• 1871: Shiroishi village was founded.
• 1873: Kamishiroishi village split off from Shiroishi village.
• 1902: Shiroishi village and kamishiroishi village were merged to form Shiroishi village.
• 1950: Shiroishi village was merged into Sapporo city.
• 1972: Sapporo was designated as one of the cities designated by government ordinance and Shiroishi-ku was established.
• 1989: Atsubetsu-ku split off from Shiroishi-ku.

• JR Hokkaido
  • Hakodate Main Line: Shiroishi Station
  • Chitose Line: Shiroishi - Heiwa
• Sapporo Municipal Subway
  • Tōzai Line: Kikusui - Higashi-Sapporo - Shiroishi - Nangō-Nana-Chōme - Nangō-Jūsan-Chōme - Nangō-Jūhatchōme

• Hokkaido Expressway: Sapporo IC - Kitago IC - Oyachi IC
• Route 12
• Route 274
• Route 275

• Hokkaido Sapporo Higashi High School
• Hokkaido Sapporo Shiroishi High School
• Hokkaido Sapporo Hakuryo High School

• Clark Memorial International High School, Sapporo Shiroishi Campus

Shiroishi's mascots are Shiroppy (しろっぴー) and Kuroppy (くろっぴー). They are cute snowmen with rose motifs.

• Shiroppy is a white active snowwoman who wears a red rose hat and cares about people. She was unveiled in July 2008.
• Kuroppy is a grey selfish snowwoman who wears a blue rose hat and loves to bother people for fun. She is the rival of Shiroppy. She was unveiled in February 2020.

• Shiroishi, Miyagi

• Shiroishi-ku word office (in Japanese)