Beaker is a Muppet character from the sketch comedy television series The Muppet Show. He is the shy, long-suffering assistant of Dr. Bunsen Honeydew, and is also similarly named after a piece of laboratory equipment.

During the first season of The Muppet Show, Dr. Honeydew presented the Muppet Labs segments by himself; Beaker was added as his lab assistant from the second season on. Beaker has bulging eyes, a shock of red hair, and a drawbridge mouth which serves as a frown. He was originally puppeteered and voiced by Richard Hunt until Hunt's death in 1992, when the role was taken over primarily by Steve Whitmire. After Whitmire was fired in 2016, David Rudman took over the character.

Beaker is a magnet for disaster; he routinely experiences mishaps such as being blown up, electrocuted, eaten by large monsters, or afflicted with awkward side effects caused by Honeydew's experiments. Beaker communicates in a nervous, high-pitched squeak that sounds like "Mee-mee-mee mee". In books and merchandise, the sound is spelled "Meep". In The Muppet Movie, he "meeps" Honeydew's line "sadly temporary". Rarely he can say normal words, such as "Bye-bye." Otherwise, his tone or expression helps to communicate his meaning. This helps Beaker communicate to his viewers directly without having to speak any real words at all.