The judge concluded they do not depict illegal conduct, evidence of mistreatment or potential sources of governmental embarrassment.
Authorities have said Mohammed al-Qahtani narrowly missed being the 20th hijacker when he was denied entry into the US at a Florida airport a month before the attacks. Charges against him were dropped.
The Center for Constitutional Rights sued the Department of Defense, the Department of Justice and the Central Intelligence Agency last year, saying the release of videotapes and photographs of his harsh interrogation were in the public interest.
Attorneys seeking release of the videotapes say al-Qahtani lost significant weight and showed symptoms of "extreme psychological trauma" that included talking to non-existent people, reporting hearing voices and crouching in a corner of his cell covered with a sheet for long periods
But a US District judge, who reviewed a government summary of the videotapes, said the images were properly classified secret by the government because it was "both logical and plausible that extremists would utilize images of al-Qahtani" to incite anti-American sentiment, to raise funds and to recruit other loyalists.
The government did not immediately comment.
Al-Qahtani was captured by Pakistani forces on December 15, 2001 and turned over to the United States. Two months later, he was taken to Guantanamo, where he remains.
