Jurors will resume deliberations Friday. Her family gasped each time the words "not guilty" were pronounced.
She claimed her husband didn't use the internet in their home, but he did.
Linda Moreno, the defense attorney, suggested during the trial that Salman was subject to intimidation and that information and text messages that incriminated Salman had been "planted".
"We respect the jury's verdict and thank them for their hard work", said the U.S. Attorney's Office in a statement.
"Nothing can erase the pain we all feel about the senseless and brutal murders of 49 of our neighbors, friends, family members and loved ones", Mina said in a statement. "Our community is strong".
The widow of the man who shot dead 49 people at a nightclub in Orlando, Florida almost two years ago was acquitted Friday of aiding and abetting her husband, AFP reported.
The FBI questioned Salman who confessed to knowing what her husband's plans were, she admitted to helping him scout out the venue for his attack. "The defendant didn't pull the trigger that night, but she did serve as a green light for her husband".
Salman's attorneys argued she was not an accomplice in the case, but a victim. They say it was coerced and she signed it because she was exhausted and feared losing her young son.
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"I believe in justice", he said, "as long as we protect our justice all of us will be fine".
Salman did not testify in her defense.
In the days leading up to the attack, Salman was recorded on surveillance cameras accompanying Mateen on a shopping spree for clothing, toys for their son and jewelry. If she was aware of what was going to happen, it was her duty to say something, Carter said. "Really that is the top most important thing the family wants you all to know, regardless of their happiness today at the verdict".
They asked several questions, including about the statement Salman made to the Federal Bureau of Investigation.
Salman was married to Omar Mateen when he attacked the gay nightclub.
Defence attorney Fritz Scheller speaks with members of the media following the acquittal of the Pulse Nightclub gunman's widow Noor Salman in Orlando on Friday. "I said, day one, that she's innocent and I would stand here in front of you when the jury comes with the verdict to tell you, 'I told you so'". The case against her mainly consisted of a so-called confession she made to the police after intense questioning for over 17 hours. She called a friend and her uncle in California, saying that she was coming to visit and that Mateen would be joining them.
In the trial, the Federal Bureau of Investigation accused her of making a false confession.
Salman was interviewed by authorities for 11 hours, and her IQ score is 84, which makes her "below average in intelligence", Frumkin said. A judge rejected motions to either dismiss the case or order a mistrial earlier this week.
Indeed, the evidence, as The Intercept documented previously, is very clear that the first time Mateen ever went to Pulse was to attack it, after simply searching Google for "nightclubs downtown Orlando".