Starostin's ( 1991 ) lexicostatistical research claimed that the proposed Altaic groups shared about 15 – 20 % of potential cognates within a 110-word Swadesh-Yakhontov list ( e. g. Turkic – Mongolic 20 %, Turkic – Tungusic 18 %, Turkic – Korean 17 %, Mongolic – Tungusic 22 %, Mongolic – Korean 16 %, Tungusic – Korean 21 %).

A mummified man, determined to be 5, 000 years old, was discovered on a glacier at the Austrian – Italian border in 1991.

* 1919 – Billy Vaughn, American musician and bandleader ( d. 1991 )

* 1991 – Magnus Paajarvi, Swedish hockey player

* 1991 – The European Community recognizes the independence of the Baltic states of Estonia, Latvia and Lithuania.

* 1991 – Moldova declares independence from the USSR.

* 1991 – Rikiya Otaka, Japanese actor

* 1991 – Tim Berners-Lee releases files describing his idea for the World Wide Web.

* 1991 – Takako Doi, chair of the Social Democratic Party, becomes Japan's first female speaker of the House of Representatives.

* 1991 – Jiao Liuyang, Chinese swimmer

* 1902 – Zino Francescatti, French violinist ( d. 1991 )

* 1991 – Hansika Motwani, Indian actress

* 1991 – Candela Vetrano, Argentine actress and singer

* 1898 – Regis Toomey, American actor ( d. 1991 )

* 1912 – Salvador Luria, Italian-American microbiologist, Nobel Prize laureate ( d. 1991 )

* 1991 – Dave Days, American singer-songwriter and guitarist

* 1991 – Skyler Day, American actress

* 1991 – Evander Kane, Canadian ice hockey player

* Party of Labour of Albania, the sole legal political party in Albania during communist rule ( 1946 – 1991 )

Robert Warren played bass guitar in various Australian bands in both Brisbane and Sydney from 1985 to 2006, including, and in chronological order, The Closest Thing, Dementia 13, The Egyptians, Sanity Assassins, The Reptile House, Mona Lisa Overdrive, Died Pretty ( 1991 – 2002 ), Lodestar, Hissy Fit, Mr Blonde, Hawce, and most recently, Libero Vox.

* Grassi, Maria Teresa: " I Celti in Italia "-2. ed, Longanesi, Milano 1991 (); 154 p., 32 c. di tav., ill. ; 21 cm ; ISBN 88-304-1012-8

* 1991 – Marco Puntoriere, Italian footballer

* 1991 – Italian ferry Moby Prince collides with an oil tanker in dense fog off Livorno, Italy killing 140.

* 1991 – Jacopo Sala, Italian footballer

: 50px Order of Merit of the Italian Republic ( 30 September 1991 ).

In 1991 the performance of some Italian teams attracted attention-they had started using Agip's " jungle juice " Formula One fuel, worth an estimated 15 bhp — giving their drivers a significant advantage.

* 1905 – Luigi Zampa, Italian film director and screenwriter ( d. 1991 )

* 1991 – Davide Santon, Italian footballer

* 1991 – Diego Falcinelli, Italian footballer

* 1991 – Giuseppe De Luca, Italian footballer

* 1991 – Manuel Fischnaller, Italian footballer

The Death of Klinghoffer ( 1991 ): The opera's story begins with the 1985 hijacking of the Italian cruise ship Achille Lauro by Palestinian terrorists and details the murder of a passenger named Leon Klinghoffer, a retired, physically disabled American Jew.

* 1991 – Valerio Frasca, Italian footballer

* 1991 – Luca Tremolada, Italian footballer

* 1991 – Manuel Giandonato, Italian footballer

* 1921 – Yves Montand, Italian singer and actor ( d. 1991 )

* 1901 – Mario Scelba, Italian politician, 33rd Prime Minister of Italy ( d. 1991 )

* 1991 – Maximiliano Uggè, Italian footballer

In August 1991, the group killed one Italian and two Polish priests in Ancash Region.

The first edition of The Mismeasure of Man won the non-fiction award from the National Book Critics Circle ; the Outstanding Book Award for 1983 from the American Educational Research Association ; the Italian translation was awarded the Iglesias prize in 1991 ; and in 1998, the Modern Library ranked it as the 24th-best non-fiction book of all time.

* Bernard Castro, Italian inventor ( d. 1991 )

* July 14 – Natalia Ginzburg, Italian author ( d. 1991 )

After falling out with the Italian team at the end of 1991, Prost found himself without a drive for 1992 ; after the failure of extensive negotiations with Guy Ligier about buying his Ligier team, Prost decided to join Williams for 1993.

Franco Maria Malfatti di Monte Tretto () ( Rome, 13 June 1927 – 10 December 1991 ), was an Italian politician and President of the European Commission.