Amazon.com : Fotodiox Pro Lens Mount Adapter - Compatible with Pentax 645 Lens to Nikon F Mount Cameras : Electronics
K&F Concept M35111 Pentax K/M/A/FA/DA Lenses to Fuji X Lens Mount Adapter - KENTFAITH
Baader Special C-Adapter for the old Pentax S (= T-1) Thread
Pentax Q to K Lens Adapter Allows Pentax K-mount lenses to be used on Pentax Q cameras at Crutchfield
Rayqual Lens Mount Adapter for PENTAX K Lenses to Leica L-Mount Camera – JapanHobbyTool
Pentax Stereo Adapter - Accessory – Kamerastore
Amazon.com : K&F Concept Lens Mount Adapter Pentax PK Lens to Fuji FX Mount Camera Adapter Fits X-Pro1 X-E1 X-M1 : Electronics
Pentax K SLR / DSLR 2" UltraWide True-2 Prime Focus Adapter - TelescopeAdapters
Amazon.com : Fotodiox Lens Mount Adapter - Pentax K AF Mount (PKAF) DSLR Lens to Sony Alpha E-Mount Mirrorless Camera Body with Built-in Aperture Control Dial : Electronics
Vello T Mount Lens to Pentax K Camera Adapter LA-PK-T B&H Photo
Adapter L-Mount Camera Body to Pentax K Lens(LET/PENT) | Novoflex
Urth Pentax K to Fujifilm X Lens Mount Adapter | Urth US
Amazon.com : Fotodiox Lens Mount Adapter - Pentax K Mount (PK) SLR Lens to Canon EOS (EF-S) Mount SLR Camera Body : Electronics
Pentax K Adapter Ring 67 37954 B&H Photo Video
Pentax K SLR Lens to Fujifilm X-Series (FX) Mount Camera Body Adapter – Fotodiox, Inc. USA