Welch Allyn, Inc. is an American manufacturer of medical devices and patient monitoring systems.

Headquartered in Skaneateles Falls, New York, it was family-owned until it was acquired in 2015 by Hillrom.

[3] Welch Allyn was founded in 1915 in Auburn, New York by Dr. Francis Welch and inventor William Noah Allyn.

The two formed a partnership and developed the first hand-held, direct-illuminating ophthalmoscope and convinced Allyn, a medical instruments salesman, to form a partnership.

[3] The company moved to Skaneateles Falls in 1953, where it is still headquartered today.