List of NRENs that are TCS members
- ACOnet - Austrian Research and Education Network
- AMRES - Serbian Research and Education Network
- ANA - Albanian Research and Education Network
- ARNES - Slovenian Research and Education Network
- Belnet - Belgian Research and Education Network
- CARNet - Croatian Research and Education Network
- CESNET- Czech Research and Education Network
- CYNET - Cyprus Research and Education Network
- DeIC - Danish Research and Education Network
- EENet - Estonian Research and Education Network
- FCT I.P. - Portuguese Research and Education Network
- Funet - Finnish Research and Education Network
- GARR - Italian Research and Education Network
- GRNET - Greek Research and Technology Network
- HEAnet - Irish Research and Education Network
- IUCC - Israel Research and Education Network
- LitNet - Lithuanian Research and Education Network
- Malta - Maltese Research and Education Network
- NIIF/Hungarnet - Hungarian Research and Education Network
- PSNC - Polish Network PIONIER
- RedIRIS - Spanish Research and Education Network
- RENATER - French Research and Education Network
- RoEduNet - Romanian Research and Education Network
- SANET - Slovakian Research and Education Network
- SUNET - Swedish Research and Education Network
- SURFnet - Dutch Research and Education Network
- UNINETT - Norwegian Research and Education Network
RESTENA - Luxembourgian Research and Education Network
RENAM - Moldovian Research and Education Network