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Petrosyan (Armenian: Պետրոսյան), Petrosian or Petrossian (Eastern Armenian), Bedrosian or Bedrossian (Western Armenian) is a common surname in Armenia. It is a patronymic from the Armenian first name Petros (equivalent to Peter, making the name effectively equivalent to Peterson).

The following people share this surname:

Petrosyan

• Arev Petrosyan (born 1972), Armenian artist
• Arevik Petrosyan (born 1972), Armenian politician and lawyer
• Armen Petrosyan (born 1986), Armenian-Italian kickboxer
• Armen Petrosyan (Mench) (born 1975), Armenian actor, producer and broadcaster
• Armenak Petrosyan (born 1973), Armenian professional footballer
• Arsen Petrosyan (born 1991), Armenian footballer
• Artur Petrosyan (born 1971), Armenian professional footballer
• Artur Petrosyan (journalist)]] (born 1979), Russian football journalist and scout
• Gagik Petrosyan (born 1973), Armenian politician
• Galust Petrosyan (born 1981), Armenian professional footballer
• Gevorg Petrosyan (politician) (born 1972), Armenian lawyer and politician
• Giorgio Petrosyan (born 1985), Armenian-Italian kickboxer
• Hamlet Petrosyan (born 1955), Armenian historian, archaeologist and anthropologist
• Leon Petrosyan (born 1940), Russian mathematician
• Leonard Petrosyan (1953–1999), Armenian politician; second Nagorno-Karabakh Republic President (March  – September 1997)
• Manuel Petrosyan (born 1998), Armenian chess player
• Mariam Petrosyan (born 1969), Armenian painter, cartoonist and novelist
• Mariam Petrosyan (born 1991), Russian-Armenian singer and songwriter
• Nazar Petrosyan (born 1951), Russian football coach and player
• Petros Petrosyan (1968–2012), Armenian painter
• Rafik Petrosyan (1940–2021), Armenian politician
• Rudik Petrosyan (born 1980), Armenian weightlifter
• Samvel Petrosyan (born 1954), Soviet footballer
• Sergey Petrosyan (1988–2017), Azerbaijani-Russian weightlifter
• Shahen Nikolay Petrosyan (1912–1999), Armenian lawyer and professor
• Shushan Petrosyan (born 1967), Armenian singer and politician
• Sos and Victoria Petrosyan, German quick-change artists
• Valery Petrosyan (born 1942), Armenian-Russian chemist
• Vardan Petrosyan (born 1959), Armenian actor, scriptwriter, and parodist
• Vardges Petrosyan (1932–1994), Armenian writer
• Yevgeny Petrosyan (born 1945), Russian stand-up comedian of Armenian descent

Petrosian

• Adeliia Petrosian (born 2007), Russian figure skater
• Arshak Petrosian (born 1953), Armenian chess grandmaster
• Ashot Petrosian (1930–1998), Soviet Armenian mathematician
• Davit G. Petrosian (born 1984), Armenian chess player
• Georgi Petrosian (born 1953), Armenian politician
• Mahaya Petrosian (born 1970), Iranian actress of Armenian descent
• Manouk Petrosian (1676–1749), Armenian scholar and theologian
• Tigran Petrosian (1929–1984), Soviet-Armenian chess grandmaster and world champion
• Tigran L. Petrosian (born 1984), Armenian chess grandmaster

Petrossian

• Petrossian (business), French international enterprise in trade of caviar and wide range of products
  • Armen Petrossian , French-Armenian businessman and director of Petrossian enterprise
  • Melkoum Petrossian, French-Armenian business, co-founder of Petrossian enterprise
  • Mouchegh Petrossian, French-Armenian business, co-founder of Petrossian enterprise
• Marine Petrossian (born 1960), Armenian poet, essayist and columnist
• Michel Petrossian (born 1973), French-Armenian composer

Ter-Petrosyan / Ter-Petrossian

• Arpine Mikaela Ter-Petrosyan (born 1990), Armenian singer, songwriter, musician and record producer
• Hakob Ter-Petrosyan (born 1971), Armenian footballer
• Levon Ter-Petrosyan (born 1945), Armenian politician; first Armenian President (1991–1998)
• Lyudmila Ter-Petrosyan (born 1948), Russian-Armenian politician
• Semeno Ter-Petrosian (1882–1922), Bolshevik revolutionary known as Kamo

Pedrossian

• Maria Aparecida Pedrossian (1934–2022), Brazilian politician
• Pedro Pedrossian (1928–2017), Brazilian politician, Governor of Mato Grosso do Sul (1980–1983 and 1991–1994)

Bedrosian

• Bedros Bedrosian (born 1955), Romanian triple jumper
• Cam Bedrosian (born 1991), American baseball player
• Haiganush R. Bedrosian (born 1943), American judge
• Steve Bedrosian (born 1957), American former Major League Baseball player

Bedrossian

• Ara Bedrossian (born 1967), Cypriot professional footballer
• Pascal Bedrossian (born 1974), French professional footballer
• Patricio Bedrossian (born 1975), Argentine footballer