NAID is an acronym which may refer to:

• Native American Indian Dog
• In medicine, Non-Anemic Iron Deficiency
• North American International Demoparty, a demoscene party in Quebec, Canada
• NAID, an Association of Defence Communities (NAID/ADC)
• Network Array of Inexpensive Disks (see also RAID)
• NAID, National Association for Information Destruction

Martin Landquist is a Swedish music producer, recording artist, remixer and songwriter working under the name Nåid. He has produced albums for artists such as a-ha, Jay-Jay Johanson, Linda Sundblad and Kent, and has remixed tracks for artists including The Cardigans. He is also a member of the bands Peking Laundry with Martin Sköld from Kent and Snowracer with Dregen from Backyard Babies, Amir Chamdin from Infinite Mass and Brady Blade.