Electronics

• DJ mixer, an audio mixing device used by DJs to blend music
• Electronic mixer, a device that combines electrical signals
• Frequency mixer, a device that combines two signals to create new frequencies
• Mixing console, a device that combines different sounds from audio signals
• Mix engineer, a person who combines parts of recorded music to create a final version
• Mode scrambler, a telecommunications device that changes how light travels through fiber cables
• Sound card mixer, a part of a sound card that directs and combines sound signals
• Vision mixer, a device that combines different video signals

Industrial and lab equipment

• Concrete mixer, a machine that mixes the materials used to make concrete, also known as a cement mixer
• Feed mixer, a tool that combines ingredients for animal food
• High-shear mixer, a device that mixes different materials like liquids, solids, or gases into a main liquid
• High viscosity mixer, a machine designed to mix thick or sticky substances
• Impinging mixer, a part of a system used to shape plastic materials
• Industrial mixer, a large machine that combines materials on a big scale for factories
• Static mixer, a tool that mixes two liquids inside a tube with special parts called baffles
• Submersible mixer, a machine that stirs liquids and thick mixtures in large containers, such as those holding wastewater or manure
• Vortex mixer, a laboratory tool used to mix small amounts of liquid quickly

Entertainment

• Mixer (service), a video game streaming platform created by Microsoft that is no longer in use
• Mixer dance, a type of dance where participants switch partners during the activity
• Production sound mixer, the leader of the team responsible for managing sound during film production
• Mixer (album), a music album released in 2012 by Desario
• "The Mixer," a song written in 1991 by The Fall from their album Shift-Work
• The Mixer, a book of short stories published in 1927 by Edgar Wallace
• The Mixer, a television show that aired in 1992, based on Edgar Wallace’s story and starring Simon Williams

Other

• Mixer (appliance): a kitchen tool used to mix ingredients together
• Mixer (engine): a device used to make airplane engines quieter
• Drink mixer: non-alcoholic ingredients used in mixed drinks and cocktails
• Mixer: another name for a singles event