As part of their recent update adding 300 million names, FamilySearch Record Search has added several databases that index some death and burial records for various states. See the list below. The update also includes many indexes for Births, Christenings and Marriages for various states. You can access these indexes and many more genealogy indexes at: FamilySearch Historical Records Search
While these death and burial indexes are not necessarily complete, they do contain numerous listings that may be helpful for genealogy research.
Recently Added Death and Burial Indexes at FamilySearch:
Arizona Deaths and Burials, 1910-1911; 1993-1994
Arkansas Deaths and Burials, 1882-1929; 1945-1963
Delaware Deaths and Burials, 1815-1955
District of Columbia Deaths and Burials, 1840-1964
Florida Deaths and Burials, 1900-1921
Hawaii Deaths and Burials, 1862-1919
Idaho Deaths and Burials, 1907-1965
Kansas Deaths and Burials, 1885-1930
Kentucky Deaths and Burials, 1843-1970
Maine Deaths and Burials, 1841-1910
Maryland Deaths and Burials, 1877-1992
New Mexico Deaths and Burials, 1788-1798; 1838-1955
New York Deaths and Burials, 1795-1952
North Carolina Deaths and Burials, 1898-1994
Ohio Deaths and Burials, 1854-1997
Oregon Deaths and Burials, 1903-1947
Utah Deaths and Burials, 1888-1946
Vermont Deaths and Burials, 1871-1965
Virginia Deaths and Burials, 1853-1912
West Virginia Deaths and Burials, 1854-1932
For more online death indexes see: Online Death Indexes and Records
