The hiker, 56-year-old Scott Klingenmaier, had been missing since Thursday.
He was last seen near Tennessee Valley Road and the Oakwood Trailhead.
The Marin County Sheriff's Office confirmed at 2:30 p.m. Tuesday that the hiker was found deceased.
He was found on Golden Gate National Park property, the sheriff's office said.
@MarinSAR located Scott Klingenmaier deceased today on @GGNRANPSAlerts property.— Marin County Sheriff (@MarinSheriff) March 3, 2020
Further information will follow from the Coroner Division at an unknown time.
Our sincerest condolences to the family of Mr. Klingenmaier.
Officials said he was at risk at the time he went missing.
The sheriff's department said he was hiking to an unknown destination.
He was described as 5-foot-7-inches tall and 172-pounds with brown hair and hazel eyes, the sheriff's department says.