David Daniel Marriott (born November 2, 1939) was a U.S. Representative from Utah.
Born in Bingham, Utah, Marriott was educated in the public schools of Sandy, Utah, and graduated from Jordan High School in 1958. He received a B.S. from the University of Utah in 1967, and a Chartered Life Underwriter (CLU) designation from the American College of Life Underwriters in 1968. He later worked as a life insurance agent and was owner-president of a Utah-based firm specializing in business and pension consultation from 1968 to 1976. Marriott also served in the Utah Air National Guard from 1958 to 1963.
Marriott was elected as a Republican to the Ninety-fifth and to the three succeeding Congresses, from January 3, 1977 to January 3, 1985. He was not a candidate for reelection in 1984 to the Ninety-ninth Congress but was an unsuccessful candidate for nomination for Governor of Utah, losing to state House speaker Norm Bangerter. He ran for his former House seat in 1990, but lost the Republican primary to Genevieve Atwood. He is a resident of Salt Lake City, Utah.
Marriott served as a Mission President for The Church of Jesus Christ of Latter-day Saints (LDS Church) from 2002-2005. He served in the South Africa Cape Town Mission. Marriott now lives in Salt Lake City and has 12 grandchildren.