O'brien James N.
O'brokta Ronald D.
O'connell Dennis James
O'connor Michael A.
O'donnell David B.
O'donnell David Brian
O'donnell Timothy M.
O'donovan Tim
O'fallon Investment Company
O'keefe Charles M.
O'kelly Kent P.
O'malley Robert D.
O'neal George (jr.)
O'neill David Royd
O'rourke Harold T.
O-Oka Forge Co. Ltd.
O. J. Pipelines Canada
O. J. Pipelines Canada An Alberta Limited Partnership
O.j. Pipelines Corp.
O.m.v. Officine Meccaniche Venete S.r.l.