Ameristar may refer to:

• Ameristar Air Cargo, an American passenger and cargo airline based in Dallas, Texas, US
• Ameristar Casinos, a former casino operator based in Paradise, Nevada

• MIREX (music)
• Mireya Agüero
• Mireya Agüero de Corrales
• Mireya D. Correa
• Mireya Gonzalez
• Mireya González
• Mireya Latorre
• Mireya Luis Hernandez
• Mirey ridge Supercoil
• Mirey ridge supercoil
• Mirey Ridge Supercoil
• Mirey Ridge supercoil
• Mireș River (disambiguation)
• Mireșul Mare
• MirF
• Mirfakhraei
• Mirfin, David
• Mir Findiriski
• Mirgaani Gomaa Rizgalla
• Mirgaani Rizgalla
• Mirgan
• Mirgele
• MirGeneDB
• Mir Ghanzafar Ali
• Mirghavan