Marriott-Slaterville is a city in Weber County, Utah, United States.

The city was incorporated in July 1999, in a merger of the previously unincorporated communities of Marriott and Slaterville.

Many living descendants of these families, including relatives of J. Willard Marriott, pioneer hotelier of the 20th century and founder of Marriott International, still reside within Marriott-Slaterville.

14.2% of all households were made up of individuals, and 6.3% had someone living alone who was 65 years of age or older.

Marriott-Slaterville is located in Utah's First Congressional District For the 116th United States Congress, Utah's First Congressional District is represented by Blake Moore.