Upper Ottawa Valley Genealogical Group
- Covering mainly Renfrew County, Ontario and Pontiac County, Quebec
- http://www.uovgg.ca/

Upper Ottawa Valley Genealogy Mailing List
- Discussion mailing list for family research in Renfrew and Pontiac Counties of the Upper Ottawa Valley region of Ontario and Quebec, Canada. Affiliated with the Upper Ottawa Valley Genealogical Group, members and non-members are free to subscribe.
- http://www.rootsweb.com/~qcpontia/uovgen.html

La Régionale Saint-Laurent Inc.
- An organization dedicated to the preservation of French Ontario heritage, providing genealogical data focussed on Catholic families in eastern Ontario, and elsewhere.
- http://www.regionalesaintlaurent.ca/

Ontario Cemeteries Resources
- An extensive list of cemetery locations, photos and researchers covering the counties and districts of Ontario.
- http://www.wightman.ca/~dkaufman/

Algoma GenWeb
- Genealogical resources for the Algoma district of Ontario, with links to message boards and local sites containing relevant records.
- http://www.rootsweb.com/~onalgoma

Federal Census of 1871 (Ontario Index)
- Database of heads of households in Ontario as they were recorded in the April 1871 Federal Census.
- http://www.collectionscanada.ca/02/020108_e.html

The C. Robert Craig Memorial Library
- Documenting the history of rail transportation in Canada, with an emphasis on eastern Ontario. Includes an overview and purpose for the library, acquisition and lending policies and numerous useful resource links.
- http://www.ovar.ca/CraigLibrary/craiglib.htm

BayTown Publications
- Offers for sale published transcripts of Marriage Registrations (1869-1872/73) for Waterloo County, the Districts of Muskoka, Parry Sound and Algoma. Includes the 1840 Census of Waterloo, Wilmot & Woolwich Townships.
- http://my.tbaytel.net/baytown/

Bill Martin's Genealogy Home Page
- Includes early records and other genealogical information. Links to related content are also presented.
- http://my.tbaytel.net/bmartin

In Search of Your Ontario Roots
- Free on-line databases include 1901 Census Finder for Toronto, and Archives microfilm list. GenieLog Genealogy Research Tools (Soundex calculator, and census age calculator.)
- http://www.ontarioroots.com/

Irish and Huron Tract Ontario Canada
- Provides a databases of names events and places, Church records for the Huron and Perth areas, census for McKillop Township and places of origin in Ireland.
- http://freepages.genealogy.rootsweb.com/~irish/indhuron.htm

Ontario Chapter, Association of Professional Genealogists
- Includes a chapter overview with an offer of assistance for research, details of the association, membership information including meetings.
- http://www.rootsweb.com/~onapg/

Upper Canada Mailing List
- A mailing list for discussion of genealogy and history of Upper Canada (present day Ontario) before Confederation (1867).
- http://lists.rootsweb.com/index/intl/CAN/UPPER-CANADA.html

Ontario GenWeb
- Main site for Ontario genealogical research, includes a FAQs page, site search, feedback page, links to other related resources.
- http://www.rootsweb.com/~canon/

The Olive Tree Genealogy: Ontario Section
- Comprehensive resources for genealogical and historic research in the province.
- http://olivetreegenealogy.com/can/ont/

Ontario Personal Genealogy Pages
- A collection of links to personal family genealogical pages. Includes links to related resources.
- http://www.islandnet.com/~jveinot/cghl/personal-on.html

Canadian Genealogy and History Links - Ontario
- Provides a comprehensive collection of links to resources recording births, deaths, marriages, census information and related data. Also includes links to historical, geographic and socio-economic data.
- http://www.islandnet.com/~jveinot/cghl/ontario.html

Connor and Coltson's Directory of Ontario County, 1869-70
- Historic data which includes town names, local governments, elected representatives and related information.
- http://freepages.genealogy.rootsweb.com/~wjmartin/ontario.htm

Mennonite Archives of Ontario
- Describes the collections held in the Mennonite Archives of Ontario in Waterloo. Includes some finding aids.
- http://grebel.uwaterloo.ca/mao/

Surnames of Ontario
- Listing of surnames being researched by genealogists with an interest in Ontario. Includes contact information.
- http://www.geneofun.on.ca/ongenweb/surnames/

Emigration From Cork Ireland to Upper Canada, 1823
- The first Peter Robinson settlers from north Cork Ireland to the Bathurst District Upper Canada in 1823.
- http://webhome.idirect.com/~obrienr/cork1823.html

Marriages in Ontario, 1800 - 1924
- A mix of many surnames in a number of counties, arranged by year.
- http://homepages.rootsweb.com/~maryc/root.htm

Ontario Marriages Index
- Transcription of selected marriage registers between 1800 and 1924.
- http://homepages.rootsweb.com/~maryc/ontmarr.htm

Wesleyan Methodist Baptisms.
- Transcription of Wesleyan Methodist Baptismal Register for Ontario containing +100,000 records
- http://freepages.genealogy.rootsweb.com/~wjmartin/wesleyan.htm

In Search of Your Canadian Past
- Database of land owners by geographic township as shown on historical Ontario County Atlases. Land owners' names are linked to thumbnail images of the township maps. Covers southern Ontario counties.
- http://digital.library.mcgill.ca/CountyAtlas/default.htm

Ontario Cemetery Finding Aid
- Pointer database consisting of the surnames, cemetery names and location of over 2 million interments from several thousand cemeteries, cairns, memorials, and cenotaphs in Ontario.
- http://www.islandnet.com/ocfa

Global Genealogy Supply
- Genealogy and history books, district marriage registers of Ontario.
- http://www.globalgenealogy.com/dismar1.htm

Genealogy and Social History of Morewood
- A Photographic and anecdotal archive of early 'small-town' Canada, with new material added frequently - including genealogical data.
- http://www.morewood.net