Resources on personal names and family names, and their meanings, etymologies and origins.
Behindthename.com - The largest database of given names and surnames/family names (and their etymology) on the internet.
Database of names in early Germanic languages - Older page courtesy of the University of Duisburg.
Database of Nordic names - Names, old and new, in Danish, Norwegian, Swedish, Finnish, Faroese, Icelandic, Sami and Greenlandic languages, Old Norse and names from northern European mythologies.
Iranian names - This site is particularly good because it also shows which names are of Turkish, Kurdish or Arabic origin, as well as which names are typically Zoroastrian.
Medieval Names archive - List of medieval and renaissance names
The 1000 commonest surnames in Quebec - Courtesy of the Statistics Institute of Quebec.
Table of Translated Names - Work in progress, courtesy of Thande. A table of the commonest male and female given names that shows their existing variants in 20 different languages: English, Welsh, Irish Gaelic, Scots Gaelic, French, Spanish, Portuguese, Italian, Latin, Russian, German, Dutch, Danish, Polish, Hungarian, Romanian, Greek, Ethiopian, Arabic and Hebrew.
Russian Names for Writing Alternate History: A Beginner's Guide, courtesy of Alex Shalenko of Counter-Factual.net
Common Shona Names - Typical names of one of the southern Bantu ethnicities.
Latvian Surname Project - A wiki project collecting and researching all manner of Latvian surnames (family names).