Placements

Returns

Last competed in 1966:

•  Guyana

Last competed in 1987:

•  Barbados

Last competed in 1993:

•  Austria
•  Suriname

Last competed in 1995:

•  Zambia

Last competed in 1996:

•  Cayman Islands
•  Cook Islands

Last competed in 1997:

•  Turks and Caicos Islands

Withdrawals

During the contest:

•  Guam - Miss Guam 1999, Tisha Elaine Heflin had to withdraw a few days before the preliminary competition, after being discovered that she was pregnant.^[6][7]

Others:

•  Bulgaria, Miss Bulgaria 1999, Elena Angelova did not compete due lack of sponsorship.
•  Norway - Henriette Dankertsen
•  Romania - The Miss Romania 1999 pageant was cancelled and their organizers dropped the Miss Universe licence.
•  Netherlands and  Zimbabwe - Did not send delegates due to lack of sponsorship and funding.

Replacements

•  Barbados - Miss Barbados 1998, Michelle Selman did not compete for undisclosed reasons. Her 1st runner up, Olivia Harding replaced her.^[8]
•  Great Britain - The winner of Miss Great Britain Universe 1999, Nicki Lane decided to give up the crown to her 1st runner up Cherie Pisiani,^[9][10] after Lane confessed that she had a child at 14 years old.^[11]
•  Philippines - The winner of Binibining Pilipinas 1999, Janelle Delfin Bautista had to resign due to citizenship issues just like last year's successor, because she is an American citizen.^[12] The Binibining Pilipinas World 1999, Miriam Quiambao assumed the Binibining Pilipinas Universe title.

Designations

•  Honduras - Daryela Sofía Guerrero Canizales, runner up at Miss Honduras 1998 pageant was appointed by-then national director Eduardo Zablah to represent Honduras at Miss Universe 1999, after the Miss Honduras 1999 pageant was cancelled due to the consequences of Hurricane Mitch from November 1998. Previously she represented La Ceiba at Miss Honduras 1998 and Miss Teen International 1997.
•  Nicaragua - Liliana Sofía Pilarte Centeno, 1st runner up at Miss Nicaragua 1998 pageant, was appointed by the Nicaraguan Tourism Institute (INTUR) as the new Miss Nicaragua 1999 at Miss Universe 1999 pageant. After that institution declared that there is neither time nor resources to make another contest.^[13] Therefore, Pilarte was the national queen for the next 2 years until 2001.^[14]
•  Spain - Diana Nogueira, Top 12 at Miss España 1999 pageant was appointed to represent Spain at Miss Universe 1999 by her organization, after the winner of Miss España 1999, Lorena Bernal was ineligible for being underage and therefore went to Miss World 1999. Also the 1st runner up, Carmen Fernández, couldn't go to Miss Universe because her father was seriously sick and went to Miss International 1999, and the 2nd runner up, Inma Nadal had to participate in Miss Europe 1999, and the Miss España organization decided to pick Nogueira as the Spanish representative at Miss Universe 1999. She previously represented Pontevedra at the national contest.^[15]