The fourth season of America's Got Talent, an American television reality show talent competition, premiered on the NBC network on June 23, 2009. Country singer Kevin Skinner was named the winner on September 16, 2009. This season is the first season to be broadcast in high definition.
第3季原班成员朴智允、喜剧演员张度练、MC Jae Jae、歌手Bibi和崔艺娜继续出演。 制作前两季的郑钟渊PD离开，从第一季开始就加入的林秀晶PD接任。编剧杨英熙、舞台导演黄宇泽和艺术总监张妍玉仍在。
基于片库剧综内容推出的艺人搭档精编内容及经典场面串剪。
