Northwest is the ordinal direction halfway between West and North on a compass. It is the opposite of Southeast. Some terms use the word Northwest or a varation of it:

• Northwest Airlines, a large airline headquartered in the United States
• Northwest School, arts high school in Seattle
• Northwest Passage, a sea route traversing Canada's Arctic archipelago.
• Northwest Passage (disambiguation) also points to less common usages of the same term.
• Northwest Territories, Canadian territory
• North-West Frontier Province, Pakistani province
• North West England, English region
• North West Province, a province of South Africa
• The Northwest Territory, historical region roughly overlapping today's Midwestern United States.
• Norwest Bank (now Wells Fargo)
• North-Western Territory, historical British North American territory
• Pacific Northwest, unofficial region in the United States and Canada
• The Nor'wester wind and associated Nor'west arch, a weather pattern in southern New Zealand
• North-West District, Botswana
• Nord-Ouest Province, Cameroon
• Nord-Ouest Department, Haiti
• North West Frontier Province, Pakistan
• North Western Province, Sri Lanka
• Northwestern Federal District, Russia
• North-Western Province, Zambia