Matthew "Matt" Harmon is a character on Fuller House, portrayed by John Brotherton.


Matt is the son of D.J.'s retired boss Fred Harmon. He is a veterinarian, like his father and D.J., who lived in Miami, FL prior to Fuller House where he ran his own veterinary clinic. Along with D.J., he is the co-owner of Harmon-Fuller Pet Care, the newly renamed clinic his father owned before retiring.


  • Matt is Steve Hale's rival as they both wish to date D.J.. However, in the Season 1 finale, D.J. tells them that she's not ready to date yet.
  • It is revealed that Matt has a dog in Love is in the Air.

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