Moniteur may refer to:

• Belgian official journal (Moniteur Belge), the official journal of Belgium
• Le Moniteur Universel, a French newspaper between 1789 and 1901, and at times the official journal of the French government
• Il Monitore Napoletano, gazette of the short-lived Parthenopaean Republic was named in emulation of the above French one
• Le Moniteur des travaux publics et du bâtiment, a French magazine

• Grey matplant
• Grey McLeish
• Grey ministreak
• Grey Ministreak
• Grey ministry
• Grey Ministry, 1877-1879
• Grey Ministry, 1877–1879
• Grey mouse ear
• Grey mouse-ear
• Greymouth Borough
• Greymouth District High School
• Greymouth Evening Star
• Greymouth Marist
• Grey mullets
• Grey (musical duo)
• Grey (musical duo) discography
• Grey (musician duo)
• Grey myall
• Grey-naped Pheasant Pigeon
• Grey-naped pheasant pigeon
• Grey-Naped Pheasant Pigeon
• Grey, Nathan
• Grey-Necked Bunting
• Grey-necked honeyeater
• Grey, Nicholas