Igreja Nova means "New Church" in Portuguese and may refer to:

• Igreja Nova, Alagoas, a city in Alagoas, Brazil
• Igreja Nova (Barcelos), a parish in Barcelos Municipality, Portugal
• Igreja Nova (Mafra), a parish in the Mafra Municipality, Portugal

• Operation Haudegen
• Operation Have Horn
• Operation Haven
• Operation Hawthorn
• Operation Heads
• Operation Headstart
• Operation Head Start
• Operation Heaven
• Operation Heavenly
• Operation Hedgerow
• Operation Helios
• Operation Hemorrhage
• Operation Herbstgewitter II
• Operation Herrick IV
• Operation Herrick IX
• Operation herrick order of battle
• Operation Herrick V
• Operation Herrick VI
• Operation Herrick VII
• Operation Herrick VIII
• Operation herring
• Operation Hestia
• Operation Hickory
• Operation Hirondelle
• Operation Hispaniola