All India Radio
India's only Radio Network on the Internet in real audio providing news, music, drama and much more..
http://www.air.kode.net

BBC worldwide Service in Tamil
http://www.bbc.co.uk/tamil

Canadian Tamil Broadcasting Corporation
http://www.ctbc.com

Tamil Radio UK
http://www.ibc-tamil.demon.co.uk

Tamil Radio
Thenisai FM radio
http://www.listen.to/tamilfm

Radio Asia Canada International
24 Hours Tamil Radio.
http://www.radioasiacanada.ca

Shakthi World Radio
http://www.shakthifm.com

Internet Radio
Tamil Kudil offers on-demand audio/video services as well as streaming content in tamil.
http://www.tamilkudil.com

Thendral
The First American Tamil Radio.
http://www.thendral.com