SO2

SO2 or SO₂ may refer to:

Science

• Sulfur dioxide (SO₂), an oxide of sulfur, a chemical compound
  • Sulfonyl group (R-SO₂-R)
• Special orthogonal group of degree 2
• Oxygen saturation (SO₂), in medicine of blood oxygenation
• S2 (star) or SO-2, a star near the central black hole at the center of the Milky Way galaxy
• 2015 SO₂, an Aten asteroid in a horseshoe orbit co-orbital with Earth

Military and police

• SO2, a staff officer of the second class, often a commissioned officer of lieutenant commander, major or squadron leader rank
• SO2, a London Metropolitan Police Specialist Operations command division
• Special Operations 2 – Operational, of Special Operations Executive, British, World War II

Other uses

• Star Ocean 2, a video game
• SO2 (album), a 2010 album by Shinichi Osawa

See also

• All pages with titles beginning with SO2
• All pages with titles containing SO2
• Soso (disambiguation)
• Soo (disambiguation)
• SO (disambiguation)