April 12 in the history of the Birmingham District:
- 2013: 42, a feature film with scenes shot at Rickwood Field, premiered.
- 1994: Watterson Parkway opened to traffic in Trussville.
- 1991: "Photographs of Wales 1971-1978" by Rowland Scherman went on exhibit at Joe Bar as part of that year's Salute to the United Kingdom.
- 1972: Three Dog Night headlined a massive concert at Legion Field.
- 1965: Joan Baez headlined a benefit concert for the United Negro College Fund at Stillman College in Tuscaloosa.
- 1964: The Tuscaloosa County Courthouse was officially dedicated in downtown Tuscaloosa.
- 1963: "A Call for Unity", an open letter to Birmingham's African American citizens, was published in the Birmingham News.
- 1963: Martin Luther King Jr was arrested for "parading without a permit" during a peaceful demonstration in support of civil rights for African Americans. While imprisoned he responded to "A Call for Unity" with his Letter from Birmingham Jail.
- 1938: Tuscaloosa's Bama Theatre opened with a screening of "Bringing Up Baby".
- 1899: The Slayton & Mauldin saloon opened in the Davidson Building on 19th Street North
- 1887: The first lots in the new city of Bessemer were sold.
- 1882: Sloss Furnace No. 1 was blown in.
- 1865: Wilson's Raiders occupied Montgomery.
- 1996: ClubHealth co-founder Daniel Bolus was born in Birmingham.
- 1954: Ice hockey player and coach Dave Hanson was born in Cumberland, Wisconsin.
- 1937: Postcard collector and author J. D. Weeks was born in North Birmingham.
- 1927: UAB School of Medicine dean James Pittman was born in Orlando, Florida.
- 1919: Radio newscaster Cy Bahakel was born in Birmingham.
- 1914: Investment banker Hugo Marx Jr was born in Birmingham.
- 1898: Labor and civil rights activist Hosea Hudson was born in Wilkes County, Georgia.
- 1874: U.S. Speaker of the House William Bankhead was born.
- 1834: Merchant and legislator Chambers McAdory was born in Jonesboro.
- 2020: Former NFL quarterback Tarvaris Jackson died in a single-vehicle collision near Montgomery.
- 2009: "Lonesome Dove" builder and retired businessman Billy Jack Holcombe died.
- 2008: Birmingham News editor Joseph Campbell died.
- 1968: Victorine, a female gorilla at the Birmingham Zoo died.
- 1936: Presbyterian minister and educator James Hall died in Birmingham.
- 2002: Birmingham Steeldogs 47 - Mobile Wizards 26 at the BJCC.
- 1997: Eric "Butterbean" Esch won his IBA Super-Heavyweight title.