Ho-Ho-Kus Brook is a tributary of the Saddle River (which is itself a tributary of the Passaic River) in Bergen County, New Jersey, in the United States.^[1]

The brook originates in Mahwah.

Ho-Ho-Kus Brook joins the Saddle River at the Dunkerhook area of Saddle River County Park. Their confluence marks the border of four Bergen County communities: Ridgewood, Paramus, Glen Rock and Fair Lawn.^[1]

While it flows it marks the border between Mahwah and Wyckoff.

Communities

These are the communities that the Ho-Ho-Kus Brook passes along:^{[citation needed]}

• Mahwah
• Franklin Lakes
• Wyckoff
• Allendale
• Waldwick
• Ho-Ho-Kus
• Ridgewood^[1]
• Glen Rock^[1]