I recently stumbled upon a site that indicated a Jehovah's Witness cemetery. I wondered if there might be others? I conducted a search and voila.
Kingdom Farm Cemetery http://www.rootsweb.com/~nytompki/cemeteries/kingdom_farm_cem.htm
Burke County, North Carolina http://rfci.net/wdfloyd/JehoWit.html
There are several in Canada.
Chisholm Township http://nocgg.maddoc.net/nipissin/chisholm/jehova/page0001.htm
Cooks Harbour (St. Barbe District) http://ngb.chebucto.org/Cemetery/cem-cooks-hr-jw-stb.shtml Trout Creek, Ontario http://webhome.idirect.com/~griffish/gene/cem/cemj.html
If you know of any others, please feel free to add them.