Miss Universe 1991

Miss Universe 1991 ialah edisi ke-40 pertandingan kecantikan Miss Universe yang diadakan pada 17 Mei 1991 di Aladdin Theatre for the Performing Arts, Las Vegas, Amerika Syarikat.

Lupita Jones dari Mexico menjuarai pertandingan tersebut.

 Juri 
 José Luis Rodríguez "El Puma" – Penyanyi dan pelakon Venezuela
 Janet Hubert – Pelakon Amerika Syarikat
 Kuh Ledesma – Penyanyi jazz Filipina
 Jorge Rivero – Pelakon
 Barbara Lauren – Pengarah pemilihan pelakon
 Cristophe – Penata rambut Belgium
 Dustin Nguyen – Pelakon Vietnam-Amerika
 Nadia Comaneci

 Keputusan 
Utama Gelaran Peserta Miss Universe 1991   - Lupita Jones Pemenang tempat pertama   - Pauline Huizinga Pemenang tempat ke-2   - Yulia Lemigova 6 Teratas   
  - Kelli McCarty
  - Kimberley Mais
  - Jackeline Rodríguez 10 Teratas   
  - Jacqueline Krijger
  - Vivian Benítez
  - Maréva Georges
  - Nataša PavlovićAnugerah khas Gelaran Peserta Miss Congeniality   - Monique Lindesay Miss Photogenic   - Siobhan McClafferty Best National Costume  
  - Maribel Gutiérrez
  - Vivian Benítez
  - Melissa Vargas

 Penilaian separuh akhir 
 Juara
 Pemenang tempat pertama
 Pemenang tempat ke-2
 6 Teratas
 10 Teratas
(#) Ranking pada setiap babak

 Delegasi Pakaian renang Interviu Gaun petang Purata  9.450 (1) 9.608 (1) 9.758 (1) 9.605 (1)  9.412 (2)9.533 (4) 9.650 (3)  9.532 (2)  9.225 (3) 9.550 (3) 9.717 (2) 9.497 (3)  9.073 (6) 9.592 (2) 9.600 (4) 9.422 (4)  9.213 (4) 9.418 (6) 9.542 (7) 9.391 (5)  8.950 (7) 9.425 (5)  9.542 (7) 9.306 (6)  9.135 (5) 9.190 (8) 9.550 (6) 9.292 (7)  8.897 (8) 9.350 (7) 9.350 (10) 9.229 (8)  8.867 (10) 9.067 (10) 9.590 (5) 9.175 (9)  8.875 (9) 9.167 (9) 9.442 (9) 9.161 (10)

 Peserta 

  - Kelli McCarty
  - Verónica Honnorat
  - Farrah Fiona Saunders
  - Pauline Huizinga
  - Katia Alens
  - Josephine Gault
  - Andrea Sullivan
  - María Selva Landívar
  - Patricia Franco de Godói
  - Helen Upton
  - Christy Drumeva
  - Renata Gorecka
  - Cecilia del Rosario Alfaro
  - Jacqueline Krijger
  - Diana Neira
  - Rebecca Dávila
  - Maria Lourdes Gonzalez
  - Tanja Vienonen
  - Dela Tamakole
  - Jevon Pellacani
  - Lorena Palacios
  - Anita Yuen
  - Christabelle Howie
  - Siobhan McLafferty
  - Dis Sigurgeirsdóttir
  - Miri Goldfarb
  - Maria Biscotti
  - Kimberley Mais
  - Atsuko Yamamoto
  - Katrin Richter
  - Leslie McLaren
  - Bethea Michelle Christian
  - Raema Chitty
  - Sharon Rosario
  - Kathy Hawkins
  - Monique Lindesay
  - Anne Lennard

  - Maribel Gutiérrez Tinoco
  - Seo Jung-min
  - Viviana Múñoz
  - Fidaa Chehayeb
  - Annette Feydt
  - Elaine Chew
  - Michelle Zarb
  - Dhandevy Jeetun
  - Lupita Jones
  - Ronel Liebenberg
  - Ana Sofía Pereira
  - Tonia Okogbenin
  - Lene Maria Pedersen
  - Liz Michelle de León
  - Vivian Benítez
  - Eliana Martínez
  - Maréva Georges
  - Joanna Michalska
  - Lissette Bouret
  - Melissa Vargas
  - Daniella Nane
  - Samantha Robertson
  - Eileen Yeow
  - Esther Arroyo
  - Diloka Seneviratne
  - Simone Vos
  - Susanna Gustafsson
  - Lin Shu-Chuan
  - Jiraprapa Sawettanan
  - Josie Anne Richards
  - Pinar Ozdemir
  - Yulia Lemigova
  - Adriana Comas
  - Jackeline Rodríguez
  - Nataša Pavlović
  - Marina Popou

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