Dragon Street 
Specializing in American roots and rockabilly music from the 1940s through the 1960s, including such artists as Gene Vincent and The Blue Caps and Groovey Joe Poovey, as well as some contemporary artists.
http://home.flash.net/~dragonst/Nervous Records 
Rockabilly and Psychobilly from London, United Kingdom. Artists include Mystery Gang, Blue Flame Combo, and Midnight Dynamos. News, charts, mailing list, message board, links, and online store.
http://www.nervous.co.uk/
Tail Records 
Swedish rockabilly label, home to artists including Eva Eastwood, Jack Baymoore, Jesse Al Tuscan, and The Starliters.
http://home.swipnet.se/~w-133343/
Rhythm Bomb Records 
Based in Hamburg, Germany. Offers 16 new releases every year. Also features a recording studio and a production company.
http://www.rockabillyeurope.com/top.htm
Star Tone Records 
Northern California-based Rockabilly label. Includes release information, photos and show dates.
http://www.startonerecords.com/