Harken, Inc. is an international manufacturer specializing in performance sailing hardware, headquartered in Pewaukee, Wisconsin, United States.

[2] Originally, the brothers manufactured sailboats under the name Vanguard and kept the hardware business separate so they could sell to competing boatbuilders.

[4] Harken hardware has been a dominant force in the racing segment for many years, making its Olympic and America's Cup debuts in 1976 and 1977, respectively.

Harken has sales and service offices in USA (Rhode Island, California, Florida), France, Japan, Poland, Slovenia, Sweden, Australia, New Zealand, and the United Kingdom.

[6] Harken equipment may be found on racing boats as small as the 7-foot Optimist (dinghy) to mega yachts and ocean racers.