Blood barrier may refer to:

• Blood–air barrier
• Blood–brain barrier
• Blood–ocular barrier
• Blood–retinal barrier
• Blood–testis barrier
• Blood–thymus barrier
• Blood-placental barrier

• Syrian National Orchestra for Arabic Music
• Syrian National Resistance
• Syrian Network for Human Rights
• Syrian News Agency
• Syrian New Zealander
• Syrian New Zealanders
• Syrian Observatory on Human Rights
• Syrian opposition (disambiguation)
• Syrian opposition-Islamic State in Iraq and the Levant conflict
• Syrian opposition-Islamic State of Iraq and the Levant conflict
• Syrian Oriental Orthodox Christians
• Syrian Oriental Orthodox Church
• Syrian Orthodox Christianity
• Syrian Orthodox Christians
• Syrian Orthodox Christians (disambiguation)
• Syrian Orthodox Church (disambiguation)
• Syrian Orthodox Patriarch (disambiguation)
• Syrian parliamentary election, 1947
• Syrian parliamentary election, 1953
• Syrian parliamentary election, 1954
• Syrian parliamentary election, 1961
• Syrian parliamentary election, 1973
• Syrian parliamentary election, 1977
• Syrian parliamentary election, 1981
• Syrian parliamentary election, 1986