166 (number)

In mathematics

In astronomy

• 166 Rhodope is a dark main belt asteroid, in the Adeona family of asteroids
• 166P/NEAT is a periodic comet and centaur in the outer solar system
• HD 166 is the 6th magnitude star in the constellation Andromeda

  In the military

• 166th Signal Photo Company was the official photo unit in the 89th Division of George Patton's Third Army in World War II
• Convoy ON-166 was the 166th of the numbered ON series of merchant ship convoys outbound from the British Isles to North America departing February 11, 1943
• Marine Medium Helicopter Squadron 166 is a United States Marine Corps helicopter
• was a United States Coast Guard cutter during World War II
• was a United States Navy yacht. She was the first American vessel lost in World War I
• was a United States Navy during World War II
• was a United States Navy during the World War I
• was a United States Navy during World War II
• was a United States Navy ship during World War II
• USS Jamestown was a United States Navy Oxford-class technical research ship following World War II

  In sports

• Sam Thompson’s 166 RBIs in 1887 stood as a Major League Baseball record until Babe Ruth broke the record in 1921

  In transportation

• British Rail Class 166
• The now-defunct elevated IRT Third Avenue Line, 166th Street station in the Bronx, New York
• London Buses route 166
• Piaggio P.166 is a twin-engined push prop-driven utility aircraft developed by the Italian aircraft manufacturer Piaggio
• Banat Air Flight 166 crashed on take-off en route from Romania on December 13, 1995
• Alfa Romeo 166 and 166 2.4 JTD produced from 1998–2007
• Ferrari 166 model cars produced from 1948–1953
• * Ferrari 166 Inter Coachbuilt street coupe and cabriolet

  In other fields

• The year AD 166 or 166 BC
• The atomic number of an element temporarily called