The following is a timeline of the history of the city of Norman, Oklahoma, United States.

Prior to 20th century

• 1889 – Norman Transcript newspaper begins publication.^[1]
• 1890
  • Norman designated seat of newly created Cleveland County.^[2]
  • High Gate College established.^[3]
  • Population: 787.^[3]
• 1891 – City of Norman incorporated.^[2]
• 1892 – University of Oklahoma opens.^[4]
• 1893 – Griffin Memorial Hospital established.^[2]
• 1895 – Central State Hospital established.[1]
• 1899 – University's Natural History Museum established.^[5]
• 1900 – University's School of Geology founded.^[4]

20th century

• 1907 – Norman becomes part of the new U.S. state of Oklahoma.
• 1909 – Norman Depot built.^[6]
• 1913 – Oklahoma Railway Company interurban train begins operating.^[3]
• 1915 – Oklahoma State Asylum active.^[3]
• 1918 – "Fire at State Hospital."^[2]
• 1920 – Population: 5,004.
• 1922 – WNAD radio begins broadcasting.^[7]
• 1923 – University's Memorial Stadium opens.
• 1924 – McFarlin Methodist Church built.[2]
• 1929 – Sooner Theatre built.^[8]
• 1939 – Cleveland County Courthouse built.^[2]
• 1940 – Population: 11,429.
• 1942 – U.S. military Naval Air Technical Training Center and Naval Flight Training Center established during World War II.[3]
• 1946 – Norman Municipal Hospital established.
• 1950 – Rancho Drive-in cinema in business.^[8]
• 1967 – Cleveland County Historical Society incorporated.^[9]
• 1970 – Population: 52,117.
• 1975 – Cleveland County Historical Society Museum established.^[5]
• 1981 – York International manufacturing plant in business.^[3]
• 1987 – Japan-based Hitachi, Ltd. manufacturing plant in business.^[3][10]
• 1997 – City website online (approximate date).^[11][12]

21st century

• 2003
  • Japan-based Astellas Pharma Inc. office in business.^[13]
  • Tom Cole becomes U.S. representative for Oklahoma's 4th congressional district.^[14]
• 2010 – Population: 110,925.^[15]
• 2011 - "The Man Cave" Restaurant and Bar Opens
• 2012 - "The Man Cave" Restaurant and Bar Closes
• 2016 – Lynne Miller becomes mayor.^[16]
• 2020 – adopted new flag after flag redesign contest.
• 2023 - Gary Barksdale loses bid for School Board Office 3