According to a conspiracy theory, medbeds (an abbreviation of "medical bed" or "meditation bed") are secret beds that can miraculously heal humans and extend life. The plausibility of such devices is pseudoscience.

Videos and podcasts about medbeds have become popular on the far-right corners of Telegram, Discord, and Rumble; the videos claim, without any evidence, that there are at least three types of medbeds, located in secret military tunnels: a “holographic medbed,” which can diagnose and cure any sickness; a medbed that can regenerate missing limbs in minutes; and a third that can reverse aging.

Medbed conspiracy theories often involve claims that the devices are utilized by members of a "deep state" and billionaires and that the former President of the United States, John F. Kennedy, is still alive, lying on a medbed. Belief in these devices is popular among QAnon influencers such as Michael Protzman, Romana Didulo, and YamatoQ.

Various companies sell devices or access to beds that supposedly heal ailments via imaginary technologies while also including fine print on their websites disclaiming that no diagnoses, treatment, or cures are provided. The term "medbed" is also by one company that offers offer nightly rentals in rooms in their facilities, with “highly-energized” beds.

• Biobeds are featured throughout the Star Trek series.
• Med-Bay beds are a primary driver of the plot in the 2013 film Elysium.