Haas may refer to:

• Haas F1 Team, a 21st-century Formula 1 auto racing team
• Haas Lola, a 20th-century Formula 1 auto racing team
• Newman/Haas Racing, an Indycar auto racing team
• Stewart-Haas Racing, a NASCAR auto racing team

• Haas Automation, a machine tool company
• Haas Center for Public Service, of Stanford University in Stanford, California
• Haas School of Business at the University of California, Berkeley
• Haas Type Foundry, a Swiss manufacturer of foundry type

• Haas (rocket), a Romanian launch system
• Haas effect, a psychoacoustic effect
• Haloacetic acids, also called "HAAs"
• de Haas–van Alphen effect, a quantum mechanical effect
• Einstein–de Haas effect
• Shubnikov–de Haas effect, a macroscopic manifestation of quantum mechanics

• Haas (brass instrument makers), Nuremberg, Germany based family of brass instrument makers
• Haas (name)
• Haas House, a building in Vienna, Austria
• Haas–Lilienthal House, a house in San Francisco, California
• Haas Pavilion at the University of California, Berkeley
• USS Haas (DE-424), World War II US Navy destroyer escort

• Team Haas (disambiguation)
• Hass (disambiguation)
• Has (disambiguation)
• HAA (disambiguation)
• H2A (disambiguation)
• All pages with titles beginning with Haas
• All pages with titles containing Haas