Revolution C mount to 2" and T adapter – Revolution Imager
Arducam Lens Mount Adapter for Nikon F-Mount Lens to C-Mount Raspberry Pi HQ Camera
ZEISS C-Mount Camera Adapters
C-Mount Adapter Motic BA or AE or SMZ or GM Microscopes
FotodioX Pro Lens Mount Adapter for C-Mount Lens to C-FXRF B&H
CS-mount to C-mount adapter - Lens Accessories
Baader C-Mount T-2 with integrated 1¼" Filterholder
Amazon.com : Evertech 4pcs 5mm Camera C-Mount Lens Adapter Ring Extension Tube C to CS Mount Lens Black Aliminum Adapter for Most Types of CCTV Security Cameras : Electronics
Microscope C-mount adapter 0.5x (clamp type)
Standard C-Mount Male T-Mount Female Step-Up Adapter
Amazon.com : KALT C-Mount Adapter to T-Mount Lens Mount Adapter, for M42 Screw Mount (M42x0.75) Lens or Microscope Telescope T2 to C-Mount Movie Cameras and CCTV Cameras : Electronics