This list of tallest buildings in Nebraska ranks skyscrapers in the US state of Nebraska by height for existing and proposed structures. This list includes buildings with a minimum height of , and features the 23 tallest completed buildings in the state, 20 of which are located in Omaha.
Nebraska's tallest building is the , 45-story First National Bank Tower. Completed in 1969, the , 30-story tall Woodmen Tower was formerly the tallest; and before that, the 15-story tall Nebraska State Capitol.
In January 2022, Mutual of Omaha announced they would build their new headquarters in downtown Omaha on the site of the W. Dale Clark Library, which upon completion at and 44 stories, would make the skyscraper the new tallest building in both Omaha and the state.
The following is a list of buildings that were once the tallest structure in Nebraska.