Wail may refer to:

• Wail al-Shehri (1973–2001), Saudi terrorist and hijacker of American Airlines Flight 11
• Wail Sulaiman or Wael Sulaiman (born 1964), Kuwaiti football player

• Wail, Pas-de-Calais, Hauts-de-France, France

• Black Wail, American rock band
• Blue Wail, album by pianist Uri Caine
• Dale's Wail, album by American jazz trumpeter Roy Eldridge
• Wail N Soul M, Jamaican record label

• wail, the sound made by a siren (alarm)
• wail, a type of vociferation
• WAIL, American radio station

• Whale