Knoxville:
Knoxville Birth Network
ICAN (International Cesarian Awareness Network) of KnoxvilleLisa Ross Birth and Women's Center
Lisa Ross Birth and Women's Center
Knoxville Bread Co-op

Other folks doing great work:
DONA International
Bami Ondaadiziike Birth Doula Project
Full-Spectrum Doula Network
The Prison Birth Project

This is just a start. More links coming soon!