Northwestern High School was a public high school located in Baltimore, Maryland, from 1965 to 2017. When it was built in 1965, it was racially integrated. The school's track and field teams from the 1970's and 1980's were some of the state's best, winning multiple MSA A Conference Championships.

When plans were announced in 2016 to close the school, alumni and community leaders mounted an ultimately unsuccessful campaign to keep it open. Northwestern High School closed at the end of the 2016–2017 school year, having been merged with Forest Park High School as part of the city school district's "21st Century Schools Building Plan" to consolidate and modernize its schools in response to declining enrollments. Student records are obtainable through BCPS school headquarters.

• Frank M. Conaway, Jr., member of the Maryland House of Delegates
• Keandre Cook, basketball player
• Sheila Dixon, mayor of Baltimore
• Mark A. R. Kleiman, criminal justice professor and author
• John Clark Mayden, photographer
• Ray Snell, NFL player
• Sean Vanhorse, NFL player
• Terrance West, NFL player

Louis Moorman, NFL Guru

• Northwestern High School - Maryland Report Card