Finland:

Associations:
Al Amirat
Bitrim
Fadila
Farah
Habibi Dancers
Hämeen Itämaisen Tanssin Yhdistys
Masmoudi
Masrah
Mihrimah
Niilin Neito
Pikku Egypti
Raqs Jamila
Sahara
Scarabe
Seitsemän Hunnun Tanssi
Sesam ry
Shamadaan
Warda
Yasmine
Zahra

Teachers and studios:
Afifa
Amina
El Hosseny Dance
Jaana Havia
Teija Hiekkalahti (Tahia)
Saara Lehto
Let's Dance
Peppina Lindfors
Hannele Lindgren
Mariam
Miia Ojanen
Tuija Rinne
Studio Henna
Studio Sfinksi
Studio Shamsina
Studio Zahra
Tanssikeidas
Tanssikoulu Sahira
Tanssistudio Dum Tek
Tanssistudio Sahrami
Tanssitalo Juulia
Tanssiva Aurinko
Anu Toivonen
Heli Turunen
Heli Viitalahti
Inka Vilen
Heli Väisänen
Laura Zaray

Dance merchandise:
Let's Dance
Studio Henna
Tanssiina
Tanssistudio Dum Tek
Tmi Asad
Zarifet

Blogs and other info:
Ishtar blog
Itämaisen tanssin maailma

Egypt:

Teachers and dancers:
Diana Tarkhan
Farida Fahmy
Prof. Dr. Hassan Khalil
Katia
Leila
Nour
Raqia Hassan
Sara Farouk
Yasmina

Costume designers and shops:
Al-Faham Shop
Amira Kattan, Pharaonics
Eman & Hoda Zaki
Hallah Moustafa
Hanan Mahmoud

Festivals and seminars:
Ahlan Wa Sahlan
Dance Exapsis
Habaib Festival
Lelah Masriya
Nile Group
Salamat Masr

Rest:
Arab World Directory - araboo.com
Collection of Egyptian dance links

Rest of the world:

Most of these sites have a loads of articles and other information for dancers.

Teachers and studios:
Cassandra, USA
Beata & Horacio Cifuentes, Germany
Khadejah & Mustapha El Oueslati, Germany
Morocco, USA
Samira Shuruk, USA
Yousry Sharif, USA
Shira, USA
Zorba, USA

Chats and online magazines:
Bhuz
Orientaldancer.net
The Gilded Serpent