Dictionary.com defines the word "cemetery" as an area set apart for or containing graves, tombs, or funeral urns, esp. one that is not a churchyard; burial ground; graveyard. What it doesn't mention is that cemetery and burial records are amongst the most useful tools for any genealogist. Tombstone inscriptions could lead you to a mother, a father, an unknown brother and so much more.
Canada's GenWeb Cemetery Projects - a volunteer-run "non-profit" project to find and make genealogical records freely available
Canadian Cemetery Records - search by surname across all Canadian cemetery records transcribed on this website. Searching is possible by county, region and township. Many cemeteries are only partial transcriptions
Canadian Headstones Project - browse over 61,000 gravestone photo records from across Canada!
Cemetery Junction - This site is about helping the genealogy community find information about their ancestors
City of Niagara Falls Cemetery Search - Online, searchable database
Commonwealth War Graves Commission - Provides personal and service details and places of commemoration for the 1.7 million members of the Commonwealth forces who died in the First and Second World Wars
Cyndi's List - Includes cemeteries and funeral homes
Find A Grave - Search 19 million grave records
Genealogy Services for Ohio - Services for the State of Ohio and surrounding states
Interment.net - Thousands of transcriptions of cemetery records and tombstone inscriptions, from cemeteries in the USA, Canada, England, Ireland, Australia, New Zealand, and other countries
Nationwide Graveside Locator - the US Department of Veterans Affairs maintains this database of US military burials and cemeteries
Ontario Cemetery Finding Aid - a pointer database consisting of the surnames, cemetery name and location of over 2 Million interments from several thousand cemeteries, cairns, memorials, and cenotaphs in Ontario Canada
Virtual Cemetery - Locate a tombstone in the Virtual Cemetery
US GenWeb Project - a group of volunteers working together to provide free genealogy websites for genealogical research in every county and every state of the United States.
US GenWeb Tombstone Transcription Project - Includes non-US cemeteries, military and veterans cemeteries