The nineteenth episode of Season 13, and the three hundred and sixth episode of America's Got Talent overall, aired on September 11, 2018. It was the second of two Semifinals performance episodes and took place in the Dolby Theatre. 11 acts performed for 5 spots in the Finals.
|1. Christina Wells||Singer|
|2. Da RepubliK||Dance Group|
|3. Noah Guthrie||Singer/Guitarist|
|4. Daniel Emmet||Opera Singer|
|5. Angel City Chorale||Choir|
|6. Aaron Crow||Danger Act|
|7. Vicki Barbolak||Stand-up Comedienne|
|8. We Three||Band|
|9. Glennis Grace||Singer|
|10. Brian King Joseph||Electric Violinist|
|11. Courtney Hadwin||Singer/Dancer|
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