Season 4 Episodes

Season 3 of America's Got Talent consisted of 20 episodes starting from June 17, 2008 to October 1, 2008.

Auditions
Main article: Season 3 Auditions
 * Episode 301
 * Episode 302
 * Episode 303
 * Episode 304
 * Episode 305
 * Episode 306
 * Episode 307

Vegas Round
Main article: Season 3 Vegas Round
 * Episode 308
 * Episode 309

Quarterfinals
Main article: Season 3 Quarterfinals
 * Episode 310
 * Episode 311
 * Episode 312
 * Episode 313

Semifinals
Main article: Season 3 Semifinals
 * Episode 314
 * Episode 315
 * Episode 316

Finals
Main article: Season 3 Finals
 * Episode 317
 * Episode 318
 * Episode 319
 * Episode 320