Wellfleet Communications, Inc., was an Internet router company founded in 1986 by Paul Severino, Bill Seifert, Steven Willis and David Rowe based in Bedford, Massachusetts, and later Billerica, Massachusetts.

In an attempt to more effectively compete with Cisco Systems, its chief rival, it merged in October, 1994 with SynOptics Communications of Santa Clara, California to form Bay Networks in a deal worth US$ 2.7B.

[3] Wellfleet was ranked the fastest-growing company in the United States by Fortune Magazine in both 1992 and 1993.

[7] Wellfleet concluded the best way to gain strategic positioning over Cisco would be to merge with hub manufacturer SynOptics.

[8] By combining these technologies, the joined companies could provide their customers with common product interfaces and network management tools.