H
- H&R Block – Henry W. Bloch and Richard Bloch
- Haas Automation – Gene Haas
- Haas Lola – Carl Haas
- Haas Outdoors, Inc. - Toxey Haas
- Hachette Filipacchi Médias – Louis Hachette and Daniel Filipacchi
- Haldanes – Founding chairman Arthur Haldane Harris
- Halliburton – Erle P. Halliburton
- Hamann Motorsport – Richard Hamann
- Hämmerli – Johann Ulrich Hämmerli
- Hammond Organ – Laurens Hammond
- Hanna-Barbera Productions – William Hanna and Joseph Barbera
- Harley-Davidson – William Harley and Arthur Davidson
- Harman Kardon – Sidney Harman and Bernard Kardon
- Haro Bikes – Bob Haro
- HarperCollins – James Harper and William Collins
- Harrah's Entertainment – William F. Harrah
- Harvey Norman – Gerald Harvey and Ian Norman
- Hasbro – the HASsenfeld BROthers
- Hasegawa Corporation – Suguro Hasegawa
- Hasselblad – Victor Hasselblad
- Hearst Corporation – William Randolph Hearst
- Heckler & Koch – Edmund Heckler and Theodor Koch
- Heineken International – Gerard Adriaan Heineken
- Hendrick Motorsports – Rick Hendrick
- Hennessy – Richard Hennessy
- Herpa – Wilhelm Hergenröther (HERgenröther und PAtente)
- The Hershey Company – Milton Hershey
- Hesburger – Heikki Salmela
- Hesketh Racing, Hesketh Motorcycles – Alexander Fermor-Hesketh, 3rd Baron Hesketh
- Heuer – see TAG Heuer
- Hewitt Associates – Ted Hewitt
- Hewlett-Packard – William Hewlett and David Packard
- Hilton Hotels – Conrad Hilton
- H. J. Heinz Company – Henry John Heinz
- H. K. Porter, Inc – Henry Kirke Porter
- HKS – Hiroyuki Hasegawa and Goichi Kitagawa (plus Sigma Automotive)
- Hohner – Matthias Hohner
- Holman Moody – John Holman and Ralph Moody
- Honda – Soichiro Honda
- Honeywell – Mark Honeywell
- Horlicks – James Horlick and William Horlick
- Hormel – George A. Hormel
- Hornby Railways – Frank Hornby
- Hoshino Impul – Kazuyoshi Hoshino
- Hovnanian Enterprises – Kevork Hovnanian
- Hughes Aircraft, Hughes Tool Company (to Baker Hughes), Hughes Airwest – Howard Hughes
- Hugo Boss – Hugo Boss
Read more about this topic: List Of Companies Named After People