| State1: | Alabama |
| District1: | at-large |
| Term Start1: | January 3, 1963 |
| Term End1: | January 3, 1965 |
| Predecessor1: | District inactive |
| Successor1: | District inactive |
| State2: | Alabama |
| District2: | 5th |
| Term Start2: | January 3, 1945 |
| Term End2: | January 3, 1963 |
| Predecessor2: | Joe Starnes |
| Successor2: | District inactive |
| Office3: | Member of the Alabama House of Representatives |
| Term3: | 1941-1944 |
| Birth Date: | 11 March 1902 |
| Birth Place: | Grove Oak, Alabama, US |
| Death Place: | Gadsden, Alabama, US |
| Party: | Democratic |
Albert McKinley Rains (March 11, 1902 – March 22, 1991) was a U.S. Representative from Alabama.
Born in Grove Oak, Alabama, Rains attended the public schools, Snead Seminary, Boaz, Alabama, State Teachers College (now Jacksonville State University), Jacksonville, Alabama, and the University of Alabama at Tuscaloosa.He studied law, was admitted to the bar in 1928 and commenced practice in Gadsden, Alabama, in 1929. He served as deputy solicitor for Etowah County, Alabama from 1930 to 1935, and as city attorney for the city of Gadsden, Alabama from 1935 to 1944. He served as a member of the Alabama House of Representatives 1941–1944.
Rains was elected as a Democrat to the Seventy-ninth and to the nine succeeding Congresses (January 3, 1945 – January 3, 1965). Having been a signatory to the 1956 Southern Manifesto that opposed the desegregation of public schools ordered by the Supreme Court in Brown v. Board of Education, he voted against H.R. 6127, Civil Rights Act of 1957.[1] He was not a candidate for renomination to the Eighty-ninth Congress. He served as chairman of board, First City National Bank (later First Alabama Bank of Gadsden) until becoming chairman emeritus in 1979. He was a resident of Gadsden, Alabama, until his death there on March 22, 1991.