The Parade of Nations followed the 1989 pageant in continental format and the delegates wore their national costumes.
USA, Venezuela, India, Spain, and France also placed in the Top 10 the year before.
Israel last placed in the semi-finals in 1978, Greece in 1994, Russia in 1998, and Puerto Rico in 1999.
Nigeria placed in the semi-finals for the first time.
Slovenia debuted at this year's pageant.
Greece reaches its highest placement since Corinna Tsopei won the title in 1964.
This is the first time since 1997 that the contestant representing the host country won.
Nigeria, Agbani Darego, would later win Miss World 2001. In this same pageant, the contestants from Nicaragua (Ligia Argüello) and South Africa (Jo-Ann Strauss) were finalists. Peru's Viviana Rivasplata finished in 11th place.
Poland was supposed to be represented by the 1st runner-up of Miss Polonia, Malgorzata Rozniecka. Studies prevented her from going, and the organization picked another finalist, Monika Gruda. Later in September, Malgorzata Rozniecka won the Miss International pageant in Japan.
France, Élodie Gossuin who would later win Miss Europe, faced controversy when it was rumoured that she was a transsexual, which she strongly denied. A medical examination confirmed that she was a natural-born woman.
The organization invited Miss Russia 2001, Oxana Fedorova to attend the pageant. But Fedorova said she couldn't compete because of her studies, and that she would compete in 2002. Her 2nd runner-up, Oxana Kalandyrets, competed instead and became a Top 10 finalist. In 2002, Fedorova won the contest.
Oxana Kalandyrets sported the same evening gown that Miss Russia 1997, Anna Baitchick, wore during Miss Universe 1997.
Miss Spain 2001, Lorena van Heerde, could not compete in the pageant because she was underage (17 at the time). Her 1st runner-up, Eva Sisó, replaced her. Lorena was supposed then to compete in Miss Universe 2002 as well, but after a scandal -involving an undercover journalist- threatened the integrity of the Miss Spain pageant, van Heerde crowned her successor and cut all ties with the organization.
Brazil, Juliana Borges, was heavily criticized after openly admitting to the media that she had undergone nineteen plastic surgeries, stating "It's like studying for a math exam and you get good grades... you study and you work hard to have the perfect body". Despite a public outcry she was still allowed to compete.
Philippines, Zorayda Ruth Andam, became a lawyer and would later be part of the prosecution team of the infamous Subic Rape Scandal.
These are some of the networks outside the United States (telecasted on CBS at the time) that showed the 2001 Miss Universe pageant live (or recorded earlier) in their respective countries and territories: