The National Democratic Party of Alabama (NDPA) was a political party active in the U.S. state of Alabama that opposed the segregationist governor George Wallace.

During the 1968 presidential election, Alabama's Democratic Party supported the former Governor George Wallace who was the presidential nominee of the American Independent Party. Supporters of the national Democratic Party nominee, Vice President Hubert Humphrey, left the party to support the national slate.

In 1968 led by John L. Cashin, Jr., a dentist from Huntsville who had been active in the voter registration group the Alabama Democratic Conference, Democrats loyal to Humphrey and national Democratic Party formed the NDPA as a vehicle to field a slate of electors pledged to him and not to Wallace. Although the national Democratic Party supported Humphrey, Wallace was put on the ballot in his home state as official Democratic nominee. Additionally, in 1964, the Democratic Party of Alabama's electors were unpledged instead of being pledged to Lyndon Johnson, a moot point since Alabama voted in large numbers for Barry Goldwater.

There were precedent for the behavior of the state party machinery such as when Dixiecrat Strom Thurmond was the Democratic nominee in 1948 in some southern states despite Harry S. Truman being the Democratic nominee. In 1960, Democrat John F. Kennedy was on the ballot, but the state was carried by a split slate in which most electors were unpledged, opting for Virginia Senator Harry F. Byrd in the electoral college. In 1964, the Democrat Lyndon B. Johnson was not on the ballot in Alabama, and an unpledged electors slate was officially nominated by Alabama's Democrats.

At the time, Alabama listed all the electors on the ballot but not the presidential candidate, so Democratic presidential candidate Hubert Humphrey was supported by the National Democratic slate (whose most popular elector won 54,144 votes) and an "Alabama Independent Democrat" slate (whose most popular elector won 142,435 votes). Wallace was supported by the Democratic Party of Alabama and unaffiliated American Independent electors (they were unaffiliated since the totals of different electors couldn't be added together). In the election for the US Senate, Democratic candidate Jim Allen won 638,774 votes, to 201,227 votes for Republican Perry Hooper and 72,699 votes for National Democrat Robert P. Schwenn.

Wallace garnered 65.86% of the Alabama vote, with Humphrey coming second with 18.72%.

During the 1970 Alabama gubernatorial election, John Cashin ran as the NDPA candidate for governor against George Wallace, getting 15% of the vote. Wallace was easily re-elected with 637,046 (74.51%) votes against Cashin who won only 125,491 (14.68%).

The American bald eagle was the symbol of the NDPA, which was often opposed by the Democratic Rooster in local Democratic elections.