Sina may refer to:

• Chin (China), or Sina (Chinese: 支那, 震旦), old Chinese form of the Sanskrit name Cina (चीन)
  • Shina (word), or Sina (Japanese: 支那), archaic Japanese word for China
  • Sinae, Latin name for China

• Sina, Albania, or Sinë, village in Dibër County, Albania
• Sina, Iran (Persian: سينا), a village in Isfahan Province, Iran
• Sena, Iran (سينا), also romanized as Sina, a village in Bushehr Province, Iran
• Sina Rural District, in East Azerbaijan Province, Iran
• Sina District, in San Antonio de Putina Province, Peru

• Ali Sina (activist), pseudonym of the founder of several anti-Islam and anti-Muslim websites
• Sina Ashouri (born 1988), an Iranian soccer-player
• Wynne (rapper) (born 1997), stage name of American rapper Sina Wynne Holwerda
• Ibn Sīnā (c. 980 – 1037), Avicenna, a Persian physician, philosopher, and scientist
• Elvis Sina (born 1978), an Albanian soccer-player
• Jaren Sina (born 1994), Portugal-born American basketball player of Kosovar origin
• Melek Sina Baydur (born 1948), Turkish retired woman diplomat and former Ambassador of Turkey
• Than Sina, Cambodian politician

• Sina Corporation, Chinese online media company
• Sina Bank, a private Iranian bank

• Sina and the Eel, a Samoan myth of origin
• Society for Indecency to Naked Animals, a satirical hoax perpetuated by Alan Abel
• "Sina", a song by Brazilian singer Djavan
• "Soulfood To Go (Sina)", English title of a cover of this song by Manhattan Transfer (band)

• Sina-class fast attack craft, major Iranian naval production project
• Sina-1, an Iranian satellite launched on a Russian rocket in October 2005
• Sina 7 (frigate), an Iranian frigate launched in November 2012
• Sichere Inter-Netzwerk Architektur, a German government cryptography system

• All pages with titles containing Sina
• Shina (disambiguation)
• Sinai (disambiguation)
• Sino (disambiguation)
  • Sino- prefix from Latin meaning China-