Season 13 Semifinals

The Semifinals of Season 13 of America's Got Talent will air from September 4, 2018 to September 12, 2018. A total of 22 acts performed. 10 acts proceeded to the Finals, and 12 acts were eliminated.
 * Italics indicate that the act was either chosen to move on or eliminated in the Judges' Choice, which means they finished in either 5th or 6th in America's Vote.

Process
From the 22 Semifinalists, 11 acts performed each week over two weeks. Each week, 5 acts moved onto the Finals.

The contestants that came in fourth, fifth, and sixth place in America's Vote fight for votes online in the Dunkin' Save. The act who received the most votes earned a spot in the Finals. The judges voted between the two remaining acts for the last spot of the week in the Finals.

Competing

 * Aaron Crow, Danger Act
 * Angel City Chorale, Choir
 * Brian King Joseph, Electric Violinist
 * Christina Wells, Singer
 * Daniel Emmet, Opera Singer
 * Da RepubliK, Dance Group
 * Glennis Grace, Singer
 * Noah Guthrie, Singer/Guitarist
 * We Three, Band

Week 1
Main article: Episode 1317 and Episode 1318

Performing: (10/11)
 * Amanda Mena, Singer
 * Duo Transcend, Trapeze Duo
 * Junior New System, Dance Group
 * Makayla Phillips, Singer
 * Michael Ketterer, Singer
 * Samuel J. Comroe, Stand-up Comedian
 * Shin Lim, Magician
 * Us the Duo, Band
 * Voices of Hope Children's Choir, Choir
 * Zurcaroh, Acrobatic Group

Week 2
Main article: Episode 1319 and Episode 1320

Performing: (2/11)
 * Courtney Hadwin, Singer
 * Vicki Barbolak, Stand-up Comedienne